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changes in sbcl-1.0.29 relative to 1.0.28:
  * IMPORTANT: bug database has moved from the BUGS file to Launchpad
        https://bugs.launchpad.net/sbcl
    Bugs can be reported directly there, or by sending email to
        sbcl-bugs@lists.sourceforge.net
    (no subscription required.)
  * minor incompatible change: under weak type checking policy integer
    types are weakened less aggressively.
  * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
    allowed to return, which causes SBCL to quit with exit status 0. Previously
    if the function returned with a small integer return value, that value
    was accidentally reused as the exit status.
  * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
    to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
    :HASH-FUNCTION argument. Refer to user manual for details.
  * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
    variables.
  * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
    microseconds since the Unix epoch on all platforms.
  * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
    allows the compiler to safely elide boundedness checks for special
    variables.
  * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
    the symbol, prohibits both lexical and dynamic binding. This is mainly an
    efficiency measure for threaded platforms, but also valueable in
    expressing intent.
  * new feature: UNC pathnames are now understood by the system on Windows.
  * optimization: the compiler uses a specialized version of FILL when the
    element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
    almost 90% faster.
  * optimization: accesses to potentially non-simple arrays where element type
    is known are 50% faster.
  * optimization: compiler now generates faster array typechecking code.
  * optimization: ARRAY-DIMENSION is now faster for multidimensional and
    non-simple arrays.
  * optimization: multidimensional array accesses in the absence of type
    information regarding array rank are approximately 10% faster due to
    open coding of ARRAY-RANK.
  * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
    (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
    form can be.
  * optimization: result of call to VECTOR can now be stack allocated.
  * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
    as long as the resulting array is one-dimensional and has a known
    element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
    length of the list matches the known length of the vector does not
    allocate the list as an intermediate step. Ditto for VECTOR and simple
    backquoted forms.
  * optimization: MAKE-ARRAY can now stack allocate in the presence of
    :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
    known element type, and is known to be simple and one dimensional.
  * improvement: SBCL now emits a compiler note where stack allocation was
    requested but could not be provided (not in all cases, unfortunately)
  * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
  * improvement: pretty-printing loop has been implemented properly. (thanks
    to Tobias Rittweiler)
  * documentation: CLOS slot typechecing policy has been documented.
  * bug fix: FILE-AUTHOR no longer signals an error on Windows.
  * bug fix: SB-SPROF could be foiled by foreign code not have a frame
    pointer, leading to memory faults. (thanks to Bart Botta)
  * bug fix: better floating point exception handling on x86/OpenBSD.
    (thanks to Josh Elsasser)
  * bug fix: exit status from QUIT when called under --script was lost
    (reported by Hubert Kauker)
  * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
    same implementation of FILL to initialize the array, even if a more
    efficient one was available (reported by Stas Boukarev, thanks to
    Paul Khuong)
  * bug fix: potential miscompilation of array stack allocation on x86 and
    x86-64. (reported by Time Tossavainen)
  * bug fix: some forms of AND, OR, and COND resulted in expansions that could
    result in their subforms being treated as top level forms. (reported by
    James Knight)
  * bug fix: On x86/x86-64 alien functions declared to return integers shorter
    than a machine register could leave garbage in the high bits of the
    result register (bug 316325).
  * bug fix: disable address space randomization Linux/x86-64 as well,
    not just x86-64. (reported by Ken Olum)
  * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
    generate incorrect code.
  * bug fix: #201; type inference for CONS and ARRAY types could derive
    wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
  * bug fix: special variables with a proclaimed specific subtype of FUNCTION
    could not be assigned to or bound with PROGV. (reported by Lorenz
    Mösenlechner)
  * bug fix: the value of CL:- in the inspector was the previous expression
    evaluated rather than the expression being evaluated.
  * bug fix: constants can no longer be locally declared special.
  * bug fix: signals delivered to threads started from foreign land (read:
    directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
    thread by blocking all signals and resignalling.
  * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
    from :INITFORM, if any.

changes in sbcl-1.0.28 relative to 1.0.27:
  * a number of bugs in cross-compilation have been fixed, with the ultimate
    result that building under (at least) clisp should be much more reliable.
  * minor incompatible changes: echo-streams now propagate unread-char to the
    underlying input stream, and no longer permit unreading more than one
    character.
  * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
    frames, allowing for instance more reliable backtraces.
  * improvement: the debugger REPL can now reference lexical variables
    by name directly for code compiled with (DEBUG 3).
  * improvement: errors from malformed declarations now have better source
    paths associated with them. (thanks to Tobias Rittweiler)
  * optimization: faster local calls on x86/x86-64
  * bug fix: some error messages for out-of-bound array indexes confused the
    index and the bound. (thanks to Stas Boukarev)
  * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
    Markowitz)
  * bug fix: running regressions tests in shells without OSTYPE set now works.
    (reported by Harald Hanche-Olsen)
  * bug fix: more robust static space exhaustion signalling from
    MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
  * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
    docstring away instead of storing it under names such as (LAMBDA (X)).
    (reported by Leslie Polzer)
  * bug fix: timers could go off in the wrong order, be delayed indefinitely
    (thanks to Ole Arndt for the patch)
  * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
  * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
    potentially-invalid effective methods in its cache.
  * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
    instances as well (thanks to Paul Khuong)
  * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
    SB-POSIX:WAITPID and their C equivalents.
  * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.

changes in sbcl-1.0.27 relative to 1.0.26:
  * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
  * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
  * improvement: the system either recovers from stack exhaustion or dies
    properly as opposed to leaving the user uncertain of whether the handler
    trampled on some random memory next to the stack or having to rely on
    --lose-on-corruption (which is still a good idea to use in production
    because stack exhaustion can happen in signal handlers which will likely
    lead to hangs.)
  * bug fix: fix gc related interrupt handling bug on ppc (regression from
    1.0.25.37, reported by Harald Hanche-Olsen)
  * bug fix: work around signal delivery bug in darwin (regression from
    1.0.25.44, reported by Sidney Markowitz)
  * bug fix: fix ERROR leaking memory (reported by David Thompson)

changes in sbcl-1.0.26 relative to 1.0.25:
  * incompatible change: an interruption (be it a function passed to
    INTERRUPT-THREAD or a timer function) runs in an environment where
    interrupts can be enabled. The interruption can use
    WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
    WITHOUT-INTERRUPTS to avoid nesting of interruptions and
    potentially running out of stack. Keep in mind that in the absence
    of WITHOUT-INTERRUPTS some potentially blocking operation such as
    acquiring a lock can enable interrupts.
  * incompatible change: GC-OFF and GC-ON are removed, as they were
    always unsafe. Use WITHOUT-GCING instead.
  * new feature: runtime option --disable-ldb
  * new feature: runtime option --lose-on-corruption to die at the
    slightest hint of possibly non-recoverable errors: running out of
    memory, stack, alien stack, binding stack, encountering a memory
    fault, etc. In the absence of --lose-on-corruption a warning is
    printed to stderr.
  * enhancement: detect binding stack exhaustion
  * enhancement: detect alien stack exhaustion on x86/x86-64
  * improvement: generally more stable and reliable interrupt handling
  * improvement: there is a per thread interruption queue,
    interruptions are executed in order of arrival
  * improvement: a repeating timer reschedules itself when the it has
    finished, but expiration times are spaced equally. If an
    expiration time is in the past it will trigger after a short grace
    period that may give a chance to other things to run.
  * optimization: slightly faster gc on multithreaded builds
  * optimization: faster WITHOUT-GCING
  * bug fix: when JOIN-THREAD signals an error, do it when not holding
    important locks so that the debugger/handler doesn't produce
    recursive errors or deadlock.
  * bug fix: real-time signals are not used anymore, so no more
    hanging when the system wide real-time signal queue gets full.
  * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
    fault.
  * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
  * bug fix: fix random memory faults related to interrupts on alpha
  * bug fix: fix random memory faults related to interrupts on sparc
  * bug fix: fix deadlocks related to starting threads
  * bug fix: fix deadlines on locks on futex platforms
  * bug fix: restore errno in signal handlers
  * bug fix: fix deadlocks related to hash tables
  * bug fix: fix deadlocks in pcl

Debian release 1:1.0.25.0-1

changes in sbcl-1.0.25 relative to 1.0.24:
  * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
    removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
  * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
    DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
  * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
    better name and does not return values so stale on multiprocessor systems.
    Also, HOLDING-MUTEX-P was added for about the only sane usage of
    MUTEX-OWNER.
  * improvement: unithread builds keep track of MUTEX-VALUE.
  * improvement: reading from a TWO-WAY-STREAM does not touch the output
    stream anymore making it thread safe to have a concurrent reader and
    a writer, for instance, in a pipe.
  * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
    arguments, making compiler-macros for SETF-functions able to inspect
    their constant arguments.
  * improvement: COMPILE-FILE reports times with millisecond accuracy
    (thanks to Luis Oliveira)
  * optimization: CHAR-CODE type derivation has been improved, making
    TYPEP elimination on subtypes of CHARACTER work better. (reported
    by Tobias Rittweiler, patch by Paul Khuong)
  * bug fix: setting alien structure fields of type struct by value now
    computes the right offset for the memory copy.
  * bug fix: compilation problem involving inlined calls to aliens with
    result type VOID. (reported by Ken Olum)
  * bug fix: #235a; sequential inline expasion in different policies no
    longer reuses the functional from the previous expansion site.
  * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
    unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
  * bug fix: named ENUMs in multiply-referenced alien record types no longer
    cause an implied type redefinition.  Regression from 1.0.21.29.
  * bug fix: sign-extension of small signed return values now works with C
    code compiled with gcc 4.3 or newer. (reported by Liam Healy)
  * improvements to the Windows port:
    ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
       Westfold, thanks to Rudi Schlatte)

changes in sbcl-1.0.24 relative to 1.0.23:
  * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
    vector of a multidimensional SIMPLE-ARRAY.
  * new feature: the system now signals a continuable error if standard
    readtable modification is attempted. (thanks to Tobias Rittweiler)
  * new feature: DIRECTORY has been extended with a non-standard keyword
    argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
  * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
    has been robustified and documented better. (thanks to Robert Goldman)
  * optimization: faster generic arithmetic dispatch on x86 and x86-64.
  * optimization: FORMAT ~D and ~F are now approximately 5% faster.
  * tradeoff: constant FORMAT control strings are now compiled unless
    SPACE > SPEED (previously only when SPEED > SPACE.)
  * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
    to Thomas Burdick)
  * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
    be thread safe.
  * bug fix: lexical type declarations are now correctly reported by
    SB-CLTL2. (reported by Larry D'Anna)
  * bug fix: STRING-TO-OCTETS did not handle :START properly when
    using UTF-8 as external format. (thanks to Luis Oliveira)
  * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
    are signalled correctly. (thanks to Stas Boukarev)
  * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
    designator. (thanks to Tobias Rittweiler)
  * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
    designator, and returns T instead of the function. (thanks to
    Tobias Rittweiler)
  * bug fix: direct superclasses of STANDARD-CLASS and
    FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
    FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
  * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
    when no class with the named slot yet exists no longer causes a
    compile-time style-warning.
  * bug fix: :ALLOCATION :CLASS slots are type-checked properly
    in safe code. (reported by Didier Verna)
  * bug fix: #430; nested structure constructors can stack allocate.
  * bug fix: on some 64-bit platforms dynamic space size was truncated
    to #xffff0000 bytes. (reported by Benjamin Lambert)
  * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
    REPL unusable. (reported by Daniel Herring)
  * bug fix: return values of READ-SEQUENCE did not take :START into
    account on file streams, regressions since 1.0.12.22. (reported by
    Thomas Russ, patch by Paul Khuong)
  * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
    method specializer used to confuse permuation vector optimization.
  * bug fix: system inserted bogus implicit type declarations for local
    special variables in DEFMETHOD bodies.
  * bug fix: #354; duplicated frames in backtraces due to
    non-tail-call-optimized XEPs to functions with return type NIL
    have been elimited.
  * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
    initializes structure object slots according to DEFSTRUCT initforms,
    and DEFSTRUCT forms :INCLUDEind structure classes defined using
    DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
    (reported by Bruno Haible and Stephen Wilson)
  * bug fix: #395; fill-pointer output streams used now support
    element-type BASE-CHAR as well.
  * bug fix: compiler error when attempting to derive return value of
    ARRAY-ELEMENT-TYPE when the array type was a union of intersection
    types.
  * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
    Elsasser)
  * bug fix: Mac OS X binaries should now be portable between Leopard
    and Tiger.

changes in sbcl-1.0.23 relative to 1.0.22:
  * enhancement: when disassembling method functions, disassembly
    for the associated fast function is also produced.
  * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
    report them.
  * optimization: printing with *PRINT-PRETTY* true is now more
    efficient as long as the object being printed doesn't require
    special handling by the pretty printer.
  * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
    now interact correctly with type declarations.
  * partial bug fix: PCL detects infinite recursion during wrapper
    validation. (thanks to Attila Lendvai)
  * bug fix: #426; nested function calls are inlined properly.
    Previously if FOO was an inline function, in calls of the form
    (FOO (FOO ...)) the outer call was not inlined.
  * bug fix: long long arguments passed in registers to alien
    functions on PowerPC Linux and NetBSD are now handled correctly
    when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)

changes in sbcl-1.0.22 relative to 1.0.21:
  * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
    for the shared object in the current directory, but passes the native
    namestring of the designated pathname to the operation system's shared
    object loading function as-it.
  * minor incompatible change: --disable-debugger toplevel option now takes
    effect before processing of initialization files and --eval or --load
    options.
  * new feature: new commandline argument: --script, which supports
    shebang lines. See documentation for details. (based on work by
    Kevin Reid)
  * new feature: SAVE-LISP-AND-DIE can save current values of
    --dynamic-space-size and --control-stack-size in the executable core,
    causing it to skip normal runtime option processing. See documentation
    for details. (thanks to Zach Beane)
  * enhancement: inoccous calls to EVAL or generic functions dispatching
    on subclasses of eg. STREAM no longer cause compiler notes to appear.
  * enhancement: the system no longer resignals errors from --load and
    --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
    associated with the original error to be lost. (thanks to Ariel
    Badichi)
  * enhancement: :DONT-SAVE keyword argument has been added to
    LOAD-SHARED-OBJECT for controlling interaction with
    SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
    the effects of an earlier LOAD-SHARED-OBJECT call.
  * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
    them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
    provided. (reported by Cedric St-Jean)
  * bug fix: circularity handling in the reader did not treat raw
    structure slots correctly. (reported by Cedric St-Jean)
  * bug fix: SERVE-EVENT occasionally signaled an error about bogus
    file descriptors when there were none.
  * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
    was broken. (reporteed by Willem Broekema)
  * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
    pathnames without a directory.
  * bug fix: COMPILE-FILE did not warn about undefined variable
    references at toplevel, and LOAD of the resulting fasl did
    not signal an error.
  * bug fix: functions with non-required arguments used to end up with
    (SB-C::&OPTIONAL-DISPATCH ...) as their name.
  * bug fix: redefining a function with non-required arguments didn't
    update the system's knowledge about its call signature properly.
  * bug fix: fixed #431; incompatible alien record type redefinitions
    are detected and handled. (reported by Neil Haven)
  * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
    PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
    Snellman)
  * bug fix: on x86 and x86-64 backtraces were sometimes truncated
    after alien stack frames.
  * bug fix: strings passed to mk{s,d}temp lacked null termination

changes in sbcl-1.0.21 relative to 1.0.20:
  * new feature: the compiler is able to track the effective type of a
    generic function across method addition and removal.
  * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
    appropriately typed structure slots without locking.
  * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
    information like those gathered by TIME using a programming-friendly
    interface.
  * new feature: TIME reports time taken even if the form performs a
    non-local transfer of control.
  * enhancement: reduced conservativism on GENCGC platforms: on
    average 45% less pages pinned (measured from SBCL self build).
  * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
    mutate constant symbols or violate declaimed type of the symbol.
  * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
    sleeping on the semaphore in heavily contested semaphores.
  * bug fix: semaphores and condition variables were not interrupt
    safe.
  * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
    owned by other threads anymore.
  * bug fix: FIND on lists called KEY outside the specified
    subsequence. (reported by budden)
  * bug fix: LOG doesn't use single-float intermediate results when
    given mixed integer and double-float arguments, leading to better
    precision. (reported by Bob Felts)
  * bug fix: LOG with base zero returned values of inconsistent type.

changes in sbcl-1.0.20 relative to 1.0.19:
  * minor incompatible change: OPTIMIZE qualities
    SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
    and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
    and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
  * documentation: some slot access efficiency guidelines have been
    added to the user manual.
  * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
    RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
    as ASSOC and MEMEBER.
  * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
    to more efficient EQ-comparison versions more often.
  * optimization: enhanced derivation of DOLIST iteration variable type
    for constant lists.
  * optimization: constant folding of simple (LIST ...) forms as DOLIST
    arguments.
  * optimization: runtime lookup of function definitions can be
    elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
  * optimization: compiler is able to derive the return type of
    (AREF (THE STRING X) Y) as being CHARACTER.
  * optimization: CLRHASH on empty hash-tables no longer does pointless
    work. (thanks to Alec Berryman)
  * optimization: REPLACE deftransforms don't punt when :START1 or
    :START2 is given
  * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
    no longer emits a code deletion note. (reported by Andrew
    Gasparovic)
  * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
    functions with an odd number of &OPTIONAL arguments, a &REST
    argument, and one or more &KEY arguments at the call site.
  * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
    arguments appeared at call sites as well.
  * bug fix: fixed #425; CLOSE drops input buffers from streams, so
    READ-LINE &co can no longer read from them afterwards. (reported
    by Damien Cassou)
  * bug fix: fixed #427: unused local aliens no longer cause compiler
    breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
    Halik)
  * bug fix: non-local exit from a WITH-ALIEN form no longer causes
    alien-stack leakage. (reported by Andy Hefner)
  * bug fix: PROGV signals an error when an attempt to violate declared
    type of a variable or bind a constant is made.
  * bug fix: SET signals an error when an attempt to violate declared
    type of a variable is made.
  * bug fix: restart computation during the execution of a restart
    test function no longer causes infinite recursion. (reported by
    Michael Weber)
  * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
    signals an error. (thanks to Pierre Mai)
  * bug fix: EXPORT left symbol unexported in conflict situations.
    (thanks to Michael Weber)
  * bug fix: correctly handle name conflicts involving CL:NIL.
    (thanks to Michael Weber)
  * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
    conflicts arising from USEing package with conflicting symbols
    correctly. (thanks to Michael Weber)