[Midnightbsd-cvs] src: mport.c: Add wrapper to call list updates command to see packages

[laffer1 at midnightbsd.org]

Log Message:
-----------
Add wrapper to call list updates command to see packages that need to be updated. 

This compares the installed packages on the local system to the index file which is at most 24 hours old.

Modified Files:
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    src/usr.sbin/mport:
        mport.c (r1.5 -> r1.6)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/mport/mport.c?r1=1.5&r2=1.6)