2009-10-17 Ivan Maidanski <ivmai@mail.ru>

2009-10-17  Ivan Maidanski <ivmai@mail.ru>

	* pthread_stop_world.c (pthread_sigmask): Undefine before using
	in GC_print_sig_mask() (only if DEBUG_THREADS); add the comment.
	* win32_threads.c (dlopen, _beginthread): Don't undefine (since
	neither redirected nor used here).
	* win32_threads.c (GC_Thread_Rep): Rename "table_management" to
	"tm" for short; remove "tm_" prefix.
	* win32_threads.c (in_use, next): Don't define the macros; use
	tm.in_use and tm.next fields, respectively (to ease debugging).
	* win32_threads.c (HASH): Rename to PTHREAD_MAP_HASH (to have
	unique name across the project).