/* $DOC$
   $NAME$
      ft_RmDir()
   $CATEGORY$
      DOS/BIOS
   $ONELINER$
      Delete a subdirectory
   $SYNTAX$
      ft_RmDir( <cDirName> ) -> nResult
   $ARGUMENTS$
      <cDirName> is the name of the directory to delete.
   $RETURNS$
      0   if successful
      3   if Path Not Found
      5   if Access Denied (directory not empty)
      16  if attempt to delete current directory.
      99  if invalid parameters passed
   $DESCRIPTION$
      This function is useful if you need to remove a subdirectory for
      some reason.

      The source code is written to adhere to Turbo Assembler's IDEAL mode.
      To use another assembler, you will need to rearrange the PROC and
      SEGMENT directives, and also the ENDP and ENDS directives (a very
      minor task).
   $EXAMPLES$
      ? ft_RmDir( "harbour" )
      ? ft_RmDir( hb_ps() + "example" )
      ? ft_RmDir( ".." + hb_ps() + "source" )
   $END$
 */