Warning fixes:

Warning fixes:

        * Makefile.in (fix-header): Don't needlessly depend on cpperror.o.
        * alias.c (CHECK_ALIAS_SETS_FOR_CONSISTENCY): Cast expansion to
        void since it is evaluated in a comma list.
        * mips.h (ASM_GENERATE_INTERNAL_LABEL): Always sprintf `NUM'
        argument as a long and cast `NUM' to long to ensure it is of the
        proper width.  Wrap macro arguments in parens when they appear in
        the expansion.
        * sol2.h (ASM_GENERATE_INTERNAL_LABEL): Likewise.
        * sparc.h (ASM_GENERATE_INTERNAL_LABEL): Likewise.
        (ASM_DECLARE_RESULT): Fix fprintf format specifier to match
        function argument return type.
        (REGNO_OK_FOR_INDEX_P, REGNO_OK_FOR_BASE_P, REGNO_OK_FOR_FP_P,
        REGNO_OK_FOR_CCFP_P): Use `(unsigned)' not `U'.
        * cpplib.c (cpp_message_from_errno): Remove unneeded argument to
        cpp_message.
        * dbxout.c: Fix the comments after an #endif to reflect the actual
        condition tested in the preceding #if.
        * except.c (find_all_handler_type_matches): Switch to old-style
        function definition.
        * expr.c (expand_builtin): Remove unused variable `type' twice.
        * gbl-ctors.h (DO_GLOBAL_CTORS_BODY): Cast -1 before comparing it
        to an unsigned long.
        * haifa-sched.c (print_insn_chain): Remove unused function.
        * objc/objc-act.c (build_msg_pool_reference): Hide prototype and
        definition.
        * toplev.c: When testing whether to include dbxout.h, also include
        it when XCOFF_DEBUGGING_INFO is defined.
        * unroll.c (unroll_loop): Add parentheses around assignment used
        as truth value.

From-SVN: r20801