changes in sbcl-1.4.12 relative to sbcl-1.4.11:
* minor incompatible change: a number of platform-specific elements of
*FEATURES* related to whether the system implements particular strategies
have been removed.
* minor incompatible change: some changes to the (internal) implementation
details of the x86 and x86-64 have necessitated changes to some low-level
libraries.
* enhancement: attempting to transfer control through GO or RETURN-FROM to
frames which no longer exist are now caught and handled by the debugger.
* enhancement: identical code (at the machine instruction level) can now be
shared between functions, if explicitly requested.
* enhancement: SB-EXT:STRING-TO-OCTETS and SB-EXT:OCTETS-TO-STRING are now
documented.
* bug fixes: fix a number of bugs revealed by random testing (lp#1793171,
lp#1793150, lp#1791550, lp#1792030, lp#1791059, lp#1790157, lp#1790717,
lp#1790703)