toplev.h (struct lang_hooks): Allow decode_option to indicate that language-independent processing should not...

	* toplev.h (struct lang_hooks): Allow decode_option to indicate
	that language-independent processing should not be done.
	* toplev.c (main): Adjust accordingly.

	* top.c (ffe_decode_option): Do not permit language-independent
	processing for -ffixed-line-length.

From-SVN: r41427