* c-common.h (c_common_parse_file): Update.
	* c-lang.c (LANG_HOOKS_SET_YYDEBUG): Remove.
	* c-lex.c (YYDEBUG): Get from c-lex.h.
	(c_common_parse_file): Update.
	* c-lex.h (YYDEBUG, yydebug): New.
	* c-parse.in (YYDEBUG): Get from c-lex.h.
	(c_set_yydebug): Remove.
	* c-tree.h (c_set_yydebug): Remove.
	* langhooks-def.h (lhd_do_nothing_i): New.
	(lhd_set_yydebug, LANG_HOOKS_SET_YYDEBUG): Remove.
	(LANG_HOOKS_PARSE_FILE, LANG_HOOKS_INITIALIZER): Update.
	* langhooks.c  (lhd_do_nothing_i): New.
	(lhd_set_yydebug): Remove.
	* langhooks.h (struct lang_hooks): Update.
	* toplev.c (set_yydebug): New.
	(compile_file): Update call to parse_file hook.
	(decode_d_option): Update.
ada:
	* misc.c (gnat_parse_file): Update.
cp:
	* cp-lang.c (LANG_HOOKS_SET_YYDEBUG): Remove.
	* cp-tree.h (cxx_set_yydebug): Die.
	* lex.c (YYDEBUG): Get from c-lex.h.
	(cxx_set_yydebug): Remove.
	* parse.y: Include c-lex.h.
	(YYDEBUG): Get from c-lex.h.
f:
	* com.h (ffe_parse_file): Update.
	* lex.c (ffe_parse_file): Update.
java:
	* java-tree.h (java_parse_file): Update.
	(java_set_yydebug): Remove.
	* jcf-parse.c (yydebug): Remove.
	(java_set_yydebug): Die.
	(java_parse_file): Update.
	* lang.c (LANG_HOOKS_SET_YYDEBUG): Remove.
objc:
	* objc-lang.c (LANG_HOOKS_SET_YYDEBUG): Remove.

From-SVN: r52753