** 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