* class.c (layout_class_type): Do not issue C++ ABI warnings

    * class.c (layout_class_type): Do not issue C++ ABI warnings
        for ObjC structs.
        * decl.c (objc_mark_locals_volatile): Streamline by calling
        objc_volatilize_decl().
        * parser.c (cp_parser_objc_message_expression): Allow simple
        type specifiers (instead of merely type names) as message
        receivers.
        * pt.c (template_args_equal): Do not call objc_comptypes().
        * typeck.c (composite_pointer_type): If both pointers are
        ObjC-esque, arbitrarily choose the first; do not call
        objc_comptypes().
        (comptypes): Do not call objc_comptypes().
        (convert_for_assignment): Call objc_compare_types().
        (comp_ptr_ttypes_real): Call objc_type_quals_match() before
        concluding that types do not match.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@100125 138bc75d-0d04-0410-961f-82ee72b054a4