Makefile.in (cs-tconfig.h): Pass USED_FOR_TARGET to mkconfig.sh

	* Makefile.in (cs-tconfig.h): Pass USED_FOR_TARGET to mkconfig.sh
	* aclocal.m4 (GCC_TARGET_TEMPLATE, AH_TEMPLATE): New.
	* configure.ac (enable_checking): Fix typos in runtime_checking.
	(ENABLE_RUNTIME_CHECKING): Mark as target template.
	(xm_file): Prepend auto-host.h
	(HAVE_GAS_HIDDEN, HAVE_LD_EH_FRAME_HDR): Mark as target template.
	* mkconfig.sh: Do not automatically define USED_FOR_TARGET in
	tconfig.h.
	* crtstuff.c: Do not include auto-host.h.
	(IN_LIBGCC2): Do not define.
	* gcov-io.h: Include tconfig.h, not auto-host.h.
	* libgcc2.c: Do not include auto-host.h.
	(abort): Do not undefine.
	* libgcov.c: Remove unneeded comment about config.h.
	* unwind-dw2-fde-glibc.c: Do not inlude auto-host.h.
	* config.in, configure: Regenerated.

Co-Authored-By: Paolo Bonzini <bonzini@gnu.org>

From-SVN: r99386