SUBTYPEP.
** VALUES tranformer lost derived type.
+changes in sbcl-0.8.8 relative to sbcl-0.8.7:
+ * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
+ second-resolution: integer multiples of 1/3600 between -24 and 24.
+ (thanks to Vincent Arkesteijn)
+ * optimization: implemented multiplication as a modular
+ (UNSIGNED-BYTE 32) operation on the x86 backend.
+ * optimization: SEARCH on simple-base-strings can now be open-coded.
+ (see also contrib/compiler-extras.lisp for inspiration for
+ teaching the compiler about the Boyer-Moore algorithm).
+ * bug fix: functions =, /=, <, <=, >, >= did not check the argument
+ type when called with 1 argument; PEEK-CHAR checked type of
+ PEEK-TYPE only after having read first character from a
+ stream. (reported by Peter Graves)
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** in stack analysis liveness information is propagated from
+ non-local entry points.
+ ** pathwise CAST removing failed when the CAST node did not start
+ a block.
+ ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
+ OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
+ stream.
+ ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
+ host is already defined.
+ ** RENAME-FILE works on streams instead of signalling an internal
+ type error.
+ ** PEEK-CHAR now uses the current readtable when determining
+ whether a character is whitespace.
+
planned incompatible changes in 0.8.x:
* (not done yet, but planned:) When the profiling interface settles
down, it might impact TRACE. They both encapsulate functions, and
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