Log Message:
sysutils/mtools: update to 4.0.38.

Improvements since the 4.0.36 release are:
        - Removed mclasserase commands, which doesn't fit the coding
          structure of the rest of mtools
        - Add support to -i option to mcd
        - Document -i flag in mtools.1
        - Fix a missing command error in floppyd_io.c

Improvements since the 4.0.37 release are:
        - Make sure case byte is cleared when making the special
          directory entries "." and ".."
        - In mattrib man page, replace "attribute flags" with \ 
"attribute
          bits"