Replaces the old xdir command from the xpk-distribution.
Now with pattern matching-support and more than one arg
at time (like "xpkdir ram: System3.0: env:").

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 1809    3072  58.9% -lh5- cdfb Aug 24  1997 xpkdir_eng
[generic]                 1825    3084  59.2% -lh5- 7022 Aug 24  1997 xpkdir_ger
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         2 files    3634    6156  59.0%            Aug 24  1997