** Secondary threads now always return a valid module for (current-module).
** Avoid MacOS build problems caused by incorrect combination of "64"
system and library calls.
-** Fixed compilation of `numbers.c' with Sun Studio (Solaris 9)
+** Fixed build with Sun Studio (Solaris 9)
** Fixed wrong-type-arg errors when creating zero length SRFI-4
uniform vectors on AIX.
+** Fixed a deadlock that occurs upon GC with multiple threads.
+** Fixed compile problem with GCC on Solaris and AIX (use of _Complex_I)
* New modules (see the manual for details)