* gthr-posix.h: Fix typo; compatibily -> compatibility.
        * gthr-single.h: Likewise.
        * gthr-solaris.h: Likewise.
        * gthr-vxworks.h: Likewise.
        * gthr-win32.h: Likewise.
        * gthr.h: Likewise.

From-SVN: r31646

        * gthr.h: Document __GTHREAD_MUTEX_INIT_FUNCTION.
        * frame.c (init_object_mutex): New function.
        (init_object_mutex_once): Likewise.
        (find_fde): Call it.
        (__register_frame_info): Likewise.
        (__register_frame_info_table): Likewise.
        (__deregister_frame_info): Likewise.

From-SVN: r22023

        * gthr.h: Support systems that don't have weak, but have threads.
        * configure.in (*wrs-vxworks*): Use VxWorks threads by default.
        * gthr-vxworks.h: New file.
        * objc/thr-vxworks.h: Dummy file from thr-single.c for now.

From-SVN: r18971

	* gthr.h: Changed the comment about return values.
	* gthr-solaris.h (__gthread_once): Do not use errno; return the
	error number instead of -1.
	(__gthread_key_create): Any non-zero return value is an error.
	* libgcc2.c (eh_context_initialize): Check for non-zero return
	value from __gthread_once.
	Check that the value of get_eh_context was really changed.

From-SVN: r18480

	* Makefile.in (GTHREAD_FLAGS): New var.
	(LIBGCC2_CFLAGS): Added $(GTHREAD_FLAGS).
	(distclean): Remove gthr-default.h.
	* configure.in: Accept dce as a thread package.
	Check for thread.h and pthread.h.
	Link gthr-default.h to appropriate thread file and set
	gthread_flags.
	(hppa1.1-*-hpux10*): If --enable-threads, use dce threads and
	include multilib definitions from pa/t-dce-thr.
	(sparc-*-solaris2*): Enable threads by default, if thread.h or
	pthread.h is found, preferring posix threads over solaris ones.
	* config/pa/t-dce-thr: New file.
	* config/pa/t-pa: Removed multilibs.
	* config/sparc/t-sol2: Ditto.
	* gthr.h: New file.
	* gthr-single.h: New file.
	* gthr-posix.h: New file.
	* gthr-solaris.h: New file.
	* gthr-dce.h: New file.
	* libgcc-thr.h: Removed.
	* objc/thr-dce.c: New file copied from thr-decosf1.c.
	* frame.c: Include gthr.h instead of libgcc-thr.h.
	* libgcc2.c: Include gthr.h instead of libgcc-thr.h.
	(eh_context_initialize): If __gthread_once fails, use static eh
	context.
	(eh_context_free): Call __gthread_key_dtor.

From-SVN: r17235