c-family/

c-family/
	* c-ada-spec.h (enum cpp_operation): Add IS_ASSIGNMENT_OPERATOR.
	* c-ada-spec.c (print_assignment_operator): New function.
	(dump_ada_declaration) <FUNCTION_DECL>: Call it do dump explicit copy
	assignment operators declared as methods and filter out the others.
cp/
	* decl2.c (cpp_check) <IS_ASSIGNMENT_OPERATOR>: New case.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@271457 138bc75d-0d04-0410-961f-82ee72b054a4