Warning fixes:

Warning fixes:

        * cccp.c (create_definition): Cast to U_CHAR* when assigning to one.
        * cppfiles.c (read_and_prescan): Likewise.
        Start a #define in column 0.
        * cpplib.c (cpp_define): Cast to U_CHAR* when assigning to one.
        (cpp_push_buffer): Likewise for cpp_buffer*.
        (do_include): Change the type of `fbeg' and `fend' to unsigned char*.
        (do_endif): Cast to char* when assigning to one.
        (do_assert): Likewise.
        (do_unassert): Likewise.
        (cpp_read_check_assertion): Change the type of `name' to U_CHAR*.
        Don't do unnecessary cast to char* anymore.
        * genrecog.c (make_insn_sequence): Cast to char** when assigning
        to one.  Cast the first argument of bzero to PTR.
        * loop.c (strength_reduce): Remove unused variable `note'.
        * reload1.c (new_insn_chain): Cast to struct insn_chain* when
        assigning to one.
        * rtl.c (copy_rtx): Use memcpy instead of bcopy.

From-SVN: r25860