2011-05-30 Ivan Maidanski <ivmai@mail.ru>

2011-05-30  Ivan Maidanski  <ivmai@mail.ru>

	* configure.ac (PIC): Add workaround for GCC v3.4.6 which does not
	define the corresponding macro.
	* configure.ac: Don't check for GCC twice.
	* configure: Regenerate.
	* tests/test_malloc.c (DEFAULT_NTHREADS): New macro.
	* tests/test_malloc.c (run_one_test): Refine printed message (in
	case of HAVE_MMAP).
	* tests/test_malloc.c (main): Use DEFAULT_NTHREADS.
	* tests/test_stack.c (main): Cast AO_stack_pop() returned pointer.
	* src/atomic_ops_malloc.c (USE_MMAP_ANON, GC_MMAP_FLAGS,
	OPT_MAP_ANON): New macro.
	* src/atomic_ops_malloc.c (get_mmaped): Pass -1 (instead of 0) as
	file descriptor to mmap() if MAP_ANONYMOUS (same as for MAP_ANON).
	* src/atomic_ops_malloc.c (get_mmaped): Use USE_MMAP_ANON,
	GC_MMAP_FLAGS and OPT_MAP_ANON macros; reformat code; check open()
	returned value.