Warning fixes:

Warning fixes:

        * Makefile.in (flow.o): Depend on recog.h.
        * cpplib.h (directive_table): Add missing initializiers.
        (finclude): Change type of variable `bsize' to size_t.
        * cse.c (rtx_cost): Mark parameter `outer_code' with ATTRIBUTE_UNUSED.
        * dwarfout.h (dwarfout_label): Wrap prototype in macro RTX_CODE.
        * fix-header.c (lookup_std_proto): Cast the result of `strlen' to
        `int' when comparing against one.
        (cpp_file_line_for_message): Mark parameter `pfile' with
        ATTRIBUTE_UNUSED.
        (cpp_fatal): Mark parameter `pfile' with ATTRIBUTE_UNUSED.
        * flow.c: Include recog.h.
        (sbitmap_copy): Cast arguments 1 & 2 of `bcopy' to (PTR).
        * function.c (thread_prologue_and_epilogue_insns): Mark parameter
        `f' with ATTRIBUTE_UNUSED.
        (reposition_prologue_and_epilogue_notes): Likewise.
        * genopinit.c (gen_insn): Cast argument of ctype functions to
        `unsigned char'.
        * haifa-sched.c: Include recog.h.
        (blockage_range): Cast result of UNIT_BLOCKED macro to (int) when
        comparing against one.
        * libgcc2.a (__throw): Revert ATTRIBUTE_UNUSED change for now.
        * mips-tfile.c (parse_end): Cast the argument of ctype function to
        `unsigned char'.
        (parse_ent): Likewise.
        (parse_input): Likewise.
        * optabs.c (init_libfuncs): Likewise.
        * protoize.c (find_rightmost_formals_list): Likewise.
        * recog.h (const_double_operand): Fix typo in prototype.
        * tlink.c (scan_linker_output): Cast the argument of ctype
        function to `unsigned char'.
        * toplev.c (check_lang_option): Cast the result of `strlen' to
        `int' when comparing against one.

From-SVN: r23155