2006-12-14 Hans Boehm <Hans.Boehm@hp.com> (with much help, particularly

2006-12-14  Hans Boehm <Hans.Boehm@hp.com> (with much help, particularly
	from Allan Hsu)
	* include/private/gcconfig.h: Handle Darwin/X86-64 a bit better.
	* include/private/gc_priv.h (GC_THREAD_STATE_T, GC_MAC_THREAD_STATE,
	GC_MACH_THREAD_STATE_COUNT): Define for DARWIN.
	* os_dep.c: Use GC_MAC_THREAD_STATE.
	* darwin_stop_world.c: More portable register state access,
	fix premature vm_deallocate.
	* configure.ac: Add tests for machine state field names on Darwin.
	* configure: Regenerate with autoconf 2.60a.