2009-08-20  Richard Guenther  <rguenther@suse.de>

	* c-objc-common.h (LANG_HOOKS_DUP_LANG_SPECIFIC_DECL): Do not
	define.
	* c-tree.h (c_dup_lang_specific_decl): Remove.
	(struct lang_decl, struct lang_type): Move definitions ...
	* c-lang.h: ... here.  New file.
	* c-decl.c: Include c-lang.h.
	(c_dup_lang_specific_decl): Remove.
	* c-typeck.c: Include c-lang.h.
	* Makefile.in (c-decl.o): Add c-lang.h dependency.
	(c-typeck.o): Likewise.
	* c-config-lang.in (gtfiles): Add c-lang.h.
	* gengtype.c (get_output_file_with_visibility): Handle c-lang.h
	like c-tree.h.

	objc/
	* objc-act.c: Include c-lang.h
	* Make-lang.in (objc/objc-act.o): Add c-lang.h dependency.

From-SVN: r150966