2008-11-07 Hans Boehm <Hans.Boehm@hp.com> (Really Ivan Maidansky)

2008-11-07  Hans Boehm <Hans.Boehm@hp.com> (Really Ivan Maidansky)
	(Mostly improves LLP64 support.)
	* backgraph.c, checksums.c, dbg_mlc.c, finalize.c, mark.c,
	misc.c,	reclaim.c: Changed some int and long type to word or size_t
	(and vice versa where appropriate)
	* gcj_mlc.c, include/private/dbg_mlc.h, include/private/gcconfig.h,
	include/private/thread_local_alloc.h, mark.c,
	misc.c, thread_local_alloc.c, win32_threads.c: Added intermediate
	casts to word type when casting from int to pointer (or pointer
	to int, or data pointer to code pointer) - just to remove the
	corresponding compiler warning.
	* ptr_chck.c (GC_is_visible): cast int const to word type to
	prevent left shift overflow.
	* os_dep.c: change the type of GC_mem_top_down global var
	(containing a flag) to DWORD.
	* include/gc_config_macros.h: define GC_SOLARIS_THREADS if GC_THREADS
	is defined on SunOS x86_64.
	* misc.c (GC_init_size_map): Ifdef out GC_ASSERT as a workaround
	for VC++ 2008 amd64 (v15.00.21022.08 for x64) compiler bug
	(the compiler gets hung if invoked with -Ox -D
	ALL_INTERIOR_POINTERS -D GC_ASSERTIONS)
	* backgraph.c: cast GC_gc_no value to unsigned short when
	assigned/compared to height_gc_no field of back_edges.
	* os_dep.c (GC_remove_protection): Add ARGSUSED.
	* win32_threads.c (GC_thread_exit_proc): Remove unused local var.
	* mark.c (GC_check_dirty): Move declaration out of func body.