changes in sbcl-0.9.12 relative to sbcl-0.9.11:

  * minor incompatible change: in sbcl-0.9.11 (but not earlier
    versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
    into subclasses of the finalized class.  Now user calls to
    FINALIZE-INHERITANCE finalize just the one class, and calls by the
    system return before any subclasses are finalized.
  * minor incompatible change: The reader no longer ignores errors
    regarding non-existent packages in #+ and #- feature tests.
  * new feature: command line options --no-sysinit, --no-userinit to
    inhibit loading the corresponding init files
  * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
    for sending data through UDP sockets (thanks to François-René Rideau)
  * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
    error is signalled instead (thanks to François-René Rideau)
  * minor incompatible change: Error signalling behaviour of lexical
    operations violating package locks has changed slightly. Refer to
    documentation on package locks for details.
  * enhancement: EVAL can process IF-expressions without resorting to the
    compiler.
  * bug fix: Some operations involving SIN, COS, or TAN weren't being
    constant-folded properly due to missing out-of-line functions.
    (reported by Mika Pihlajamäki)
  * bug fix: LISTEN sometimes returned T even in cases where no data was
    immediately available from the stream
  * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
    were reversed. (reported by Levente Mészáros)
  * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
    when given a vector displaced to an adjustable array.  (reported
    by Utz-Uwe Haus)
  * bug fix: derivation of float boundaries from numbers outside the
    appropriate float range (reported by John Wiseman)
  * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
    list.
  * bug fix: precomputing cache entries for generic functions with
    some subclasses of specializers as yet invalid does not attempt to
    fill a cache line with a negative offset.  (reported by Levente
    Mészároz)
  * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
    allow condition class objects as arguments to DOCUMENTATION and
    (SETF DOCUMENTATION); only find and set documentation for
    structure names for the STRUCTURE doc-type.  (suggested by Gary
    King)
  * improvements to the Win32/x86 port:
    ** (user-homedir-pathname) and default initialization file
       locations now know about the user's "Documents and Settings"
       directory (thanks to Yaroslav Kavenchuk)
    ** run-program is implemented (thanks to Mike Thomas)
    ** sockets support (thanks to Timothy Ritchey)
    ** better backtrace support (thanks to Alastair Bridgewater)
    ** sb-grovel supported
    ** asdf-install and sb-posix work somewhat
    ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
  * improvements to the Solaris/x86 port:
    ** works on Solaris 11/Solaris Express
    ** floating-point exception handling support
    ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
  * fixed some bugs revealed by Paul Dietz' test suite:
    ** REMOVE-METHOD returns its generic function argument even when
       the method is not one of the generic functions' methods.
    ** objects declared as MEMBER types can be admissible arguments to
       structure accessors.
    ** printing characters should simply be printed by the FORMAT ~:C
       directive.
    ** compiler failure when compiling functions with hairy constant
       defaults for optional parameters.
    ** compiler produces wrong code when MAYBE-INLINE-expanding a
       function, which is already optimized.