* c-common.h (objc_comptypes): Remove prototype.

    * c-common.h (objc_comptypes): Remove prototype.
        (objc_compare_types): New prototype.
        (objc_volatilized_decl): Likewise.
        (objc_type_quals_match): Likewise.
        * c-decl.c (objc_mark_locals_volatile): Streamline by calling
        objc_volatilize_decl().
        * c-typeck.c (comp_target_types): Remove third parameter; do
        not call objc_comptypes().
        (comptypes): Remove calls to objc_comptypes().
        (build_function_call): Extend compatible prototype check to ObjC.
        (build_conditional_expr): Adjust call to comp_target_types().
        (convert_for_assignment): Call objc_compare_types() instead of
        objc_comptypes(); adjust calls to comp_target_types(); call
        objc_type_quals_match() before issuing qualifier mismatch
        warnings.
        (build_binary_op): Call objc_compare_types() before issuing
        pointer mismatch warnings; adjust calls to
        comp_target_types().
        * stub-objc.c (objc_comptypes): Remove stub.
        (objc_compare_types): New stub.
        (objc_volatilized_decl): Likewise.
        (objc_type_quals_match): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@100126 138bc75d-0d04-0410-961f-82ee72b054a4