[MP] Message Packer (Hudson and JAM Only)

Packs the message base. This means that the deleted messages are effectively removed from the message base.

The following are valid options for PBUTIL MP:

(-)
-D .......................... Removes old messages. Check the section of
the manual about the message areas for more
information.
-F .......................... Forces the pack to be executed, even if
there are no deleted messages (Hudson Only)
-H .......................... Instructs the message packer to pack the
Hudson areas only.
-J .......................... Instructs the message packer to pack the
JAM areas only.
-K .......................... Deletes the .BAK files created when packing
the message base. (Hudson Only!)
-R .......................... Instructs the message packer to renumber
the message base. Renumbering the message
base is done automatically when the highest
message number exceeds 25000. Lastread-
pointers in the userfile will be adjusted
when renumbering.

Do NOT pack the message base when a user is online!!