implement method attributes.

implement method attributes.

gcc/c-family:
	merge from FSF apple 'trunk' branch.
	2006-04-26 Fariborz Jahanian <fjahanian@apple.com>

	Radar 3803157 (method attributes)
	* c-common.c (handle_deprecated_attribute): Recognize
	objc methods as valid declarations.
	* c-common.h: Declare objc_method_decl ().
	* stub-objc.c (objc_method_decl): New stub.

gcc/objc:
	merge from FSF apple 'trunk' branch.

	2006-04-26 Fariborz Jahanian <fjahanian@apple.com>
	Radar 3803157 (method attributes)
	* objc/objc-act.h (METHOD_TYPE_ATTRIBUTES): New macro.
	* objc/objc-act.c (objc_decl_method_attributes): New.
	(objc_add_method_declaration): Process method's attribute.
	(objc_start_method_definition): Ditto.
	(build_objc_method_call): Inject method attribute into
	built function type.
	(objc_method_decl): New.
	(objc_warn_deprecated)use): New.

testsuite:
	* objc.dg/attributes/method-attribute-1.m: Update to respond
	to implemented method attributes..
	* objc.dg/attributes/method-attribute-2.m: Likewise.
	* objc.dg/attributes/method-attribute-3.m: Likewise.
	* obj-c++.dg/attributes/method-attribute-1.mm: Likewise.
	* obj-c++.dg/attributes/method-attribute-2.mm: Likewise.
	* obj-c++.dg/attributes/method-attribute-3.mm: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@165415 138bc75d-0d04-0410-961f-82ee72b054a4