changes in sbcl-1.3.19 relative to sbcl-1.3.18:
* enhancement: specialized arrays can be printed readably without using
*read-eval*
* enhancement: SB-DEBUG:PRINT-BACKTRACE truncates huge string arguments.
The full string remains available for inspection via (SB-DEBUG:ARG).
* bug fix: backtracing from several threads at once could fail
* bug fix: floating-point infinities could not be used as keys
in EQUALP hash tables. (lp#1696274)
* bug fix: random sb-fasteval failures. (lp#1642708)
* bug fix: align the stack in callback wrappers to defend against C
compiler over-aggressive use of SIMD. (lp#1697528)
* bug fix: don't try to find the class when reporting that a class does
not exist for a primitive type. (lp#1697226)