2010-10-16 Ivan Maidanski <ivmai@mail.ru>

2010-10-16  Ivan Maidanski <ivmai@mail.ru>

	* darwin_stop_world.c (DARWIN_SUSPEND_GC_THREADS,
	DARWIN_QUERY_TASK_THREADS): New macro recognized.
	* darwin_stop_world.c (GC_query_task_threads): add STATIC;
	initialize to false; define as macro if DARWIN_SUSPEND_GC_THREADS
	or DARWIN_QUERY_TASK_THREADS; remove FIXME.
	* darwin_stop_world.c (GC_use_threads_discovery): New function
	(for setting GC_query_task_threads value).
	* darwin_stop_world.c (GC_mach_handler_thread,
	GC_use_mach_handler_thread, GC_mach_thread, GC_MAX_MACH_THREADS,
	GC_mach_threads, GC_mach_threads_count, GC_suspend_thread_list,
	GC_darwin_register_mach_handler_thread): Define only if not
	DARWIN_SUSPEND_GC_THREADS.
	* darwin_stop_world.c (GC_stop_world, GC_start_world): Exclude
	the code for GC_query_task_threads case from compilation unless
	DARWIN_SUSPEND_GC_THREADS.
	* os_dep.c (GC_darwin_register_mach_handler_thread): Declared only
	if Darwin threads and not DARWIN_SUSPEND_GC_THREADS.
	* os_dep.c (GC_mprotect_thread): Call
	GC_darwin_register_mach_handler_thread only if THREADS and not
	DARWIN_SUSPEND_GC_THREADS.
	* pthread_support.c (marker_mach_threads): Don't define if
	DARWIN_SUSPEND_GC_THREADS.
	* pthread_support.c (GC_mark_thread): Don't fill in
	marker_mach_threads if DARWIN_SUSPEND_GC_THREADS.
	* include/private/gc_locks.h (GC_need_to_lock): Always declare for
	THREADS case.