chmod.c (chmod_func): On MinGW, don't set is_dir

chmod.c (chmod_func): On MinGW, don't set is_dir

2012-06-01  Tobias Burnus  <burnus@net-b.de>

        * intrinsics/chmod.c (chmod_func): On MinGW, don't set is_dir
        * and
        fix octal-mode handling.
        * io/unit.c (get_internal_unit): Add cast.
        * io/unix.c (min): Undef "min" before defining it.
        * runtime/backtrace.c (show_backtrace): Move label into
        ifndef __MINGW__ block.

From-SVN: r188098