re PR pch/9830 (PCH not working on Solaris)

re PR pch/9830 (PCH not working on Solaris)

	PR pch/9830
	* ggc-common.c (HAVE_MMAP_FILE): Include sys/types.h
	if HAVE_MINCORE is defined.
	(MAP_FAILED): Define if not defined.
	(gt_pch_save): Test against MAP_FAILED.
	(gt_pch_restore): If HAVE_MINCORE, use MAP_FIXED to force
	the mapping address to the preferred base after checking it
	is possible to do so. Test against MAP_FAILED.
	* configure.in: Test for the presence of mincore in libc.
	* config.in: Regenerate.
	* configure: Regenerate.

From-SVN: r67614