* common.opt (--no-sysroot-suffix): New driver option.
	* doc/invoke.texi (--no-sysroot-suffix): Document.
	* gcc.c (driver_handle_option): Handle --no-sysroot-suffix as not
	needing spec processing.
	(main): Do not process sysroot suffixes if no_sysroot_suffix.

From-SVN: r190882