GitLab

	* Makefile.def (target_modules): Add libgcc.
	(lang_env_dependencies): Remove default items.  Use no_c and no_gcc.
	* Makefile.tpl (clean-target-libgcc): Delete.
	(configure-target-[+module+]): Emit --disable-bootstrap dependencies
	on gcc even for bootstrapped modules.  Rewrite handling of
	lang_env_dependencies to loop over target_modules.
	* configure.in (target_libraries): Add target-libgcc.
	* Makefile.in, configure: Regenerated.
gcc/
	* config.gcc: Mention libgcc/config.host.
	* Makefile.in: Update comments mentioning libgcc.
	(LIBGCC, INSTALL_LIBGCC, GCC_PARTS, mklibgcc): Delete.
	(all.cross, start.encap, rest.encap, rest.cross): Update
	dependencies for libgcc move.
	(libgcc.mk, LIBGCC_DEPS, libgcov.a, libgcc.a, stmp-multilib)
	(clean-target, clean-target-libgcc): Delete.
	(srcdirify, GCC_EXTRA_PARTS): New macros.
	(libgcc-support, libgcc.mvars): New rules.
	(distclean): Remove mention of mklibgcc.
	(install): Don't reference INSTALL_LIBGCC.
	(install-common): Don't reference EXTRA_PARTS.
	(ins...