universal time epoch and the smallest negative 32-bit time_t.
* bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
year 1899 so long as the encoded time is non-negative.
+ * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
+ the correct answer for non-constant rotate amounts when performing
+ an inline 32-bit rotation.
* threads
** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
there is only one thread in the session