[Midnightbsd-cvs] src: usr.sbin/mport: Add new clean command to mport tools.

[laffer1 at midnightbsd.org]

Log Message:
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Add new clean command to mport tools.  It deletes old packages in the staging dir and runs vacuum on sqlite3.

Also fix formatting of the man page and add details about clean there.

Modified Files:
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    src/usr.sbin/mport:
        mport.1 (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/mport/mport.1?r1=1.3&r2=1.4)
        mport.c (r1.18 -> r1.19)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/mport/mport.c?r1=1.18&r2=1.19)