invoke.texi (-dy): Remove.

	* doc/invoke.texi (-dy): Remove.
	* langhooks-def.h (lhd_do_nothing_i): Don't declare.
	(LANG_HOOKS_PARSE_FILE): Define to lhd_do_nothing.
	* langhooks.c (lhd_do_nothing_i): Remove.
	* langhooks.h (lang_hooks.parse_file): Take no arguments.
	* toplev.c (set_yydebug): Remove.
	(compile_file): Update call to lang_hooks.parse_file.
	(decode_d_option): Don't handle -dy.

ada:
	* gcc-interface/misc.c (gnat_parse_file): Take no arguments.

c-family:
	* c-opts.c (c_common_parse_file): Take no arguments.
	* c-common.h (c_common_parse_file): Update prototype.

fortran:
	* f95-lang.c (gfc_be_parse_file): Take no arguments.

java:
	* jcf-parse.c (java_parse_file): Take no arguments.
	* java-tree.h (java_parse_file): Update prototype.

lto:
	* lto.c (lto_main): Take no arguments.
	* lto.h (lto_main): Update prototype.

From-SVN: r166868