+ * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
+ Sascha Wilde)
+ * bug fix: more cleanups to the floating point exception handling on
+ x86-64 (thanks to James Knight)
+ * optimization: improved the MIPS versions of generic (in the
+ generic sense) arithmetic routines. (thanks to Thiemo Seufer)
+ * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
+ the wrong file descriptor; implementation of SOCKET-OPEN-P.
+ (thanks to Tony Martinez)