re PR bootstrap/54820 (ada: cannot find -lstdc++ since 4.8.0 20121002)

re PR bootstrap/54820 (ada: cannot find -lstdc++ since 4.8.0 20121002)

	PR bootstrap/54820
	* Makefile.tpl (STAGE1_FLAGS_TO_PASS): New variable.
	(all-[+prefix+][+module+]): Pass stage1_args to sub-makes.
	(all-stage[+id+]-[+prefix+][+module+]): Likewise, if prev is false.
	(clean-stage[+id+]-[+prefix+][+module+]): Likewise, if prev is false.
	(host_modules): Set stage1_args to STAGE1_FLAGS_TO_PASS.
	* Makefile.in: Regenerate.
	* configure.ac (have_static_libs): New variable and associated check.
	(stage1-ldflags): Move to after stage1_libs and set to -static-libstdc++
	-static-libgcc if stage1_libs is empty and have_static_libs is yes.
	* configure: Regenerate.
ada/
	* gcc-interface/Make-lang.in (GCC_LINK): Remove hardcoded options.

From-SVN: r192666