changes in sbcl-0.8.6 relative to sbcl-0.8.5:

  * fixed a bootstrapping bug: the build process no longer assumes
    that the various BOOLE-related constants have the same value in
    host and target lisps.  (noted by Paul Dietz' test suite on an
    SBCL binary built from CLISP)
  * The system can now be dynamically linked on the MIPS platform,
    which enables dynamic loading of foreign code from Lisp.  (thanks
    to Ralf Baechle for discussions on the MIPS ABI)
  * The system now records debugging information for its own source
    files in a filesystem-position-independent manner, relative to
    the "SYS" logical host.
  * fixed a compiler bug: MV-LET convertion did not check references
    to the "max args" entry point.  (reported by Brian Downing)
  * tweaked disassembly notes to be less confident about proclaiming
    some instruction as an LRA.  (thanks to Brian Downing)
  * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
    now each have their own history, command character, and other
    characteristics.  (thanks to David Lichteblau)
  * fixed some bugs revealed by Paul Dietz' test suite:
    ** compiler failure in compiling LOGAND expressions including a
       constant 0
    ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
       shift greater than 32.
    ** FLUSH-DEST did not mark blocks for type check regeneration.
    ** HANDLER-CASE failed to accept declarations in handler clauses
       in some circumstances.