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  * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a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)