1) Re-add functionality removed in revision 1.11, but only as an option.
This time, it checks out its own copy of ports/Mk and points PORTSDIR
at the correct location. To use this, use the -a option. It will not
work if it can't find portlint in your path.
2) Add option -f to disable fetching the distfile.
3) Add option -m to disable checking out a copy of Mk for 1). For those
that have a current Mk in PORTSDIR and don't want to check out a fresh
copy for whatever reason.
4) Support CVSROOT environment variable.
5) Note environment variables recognized by addport.
6) Fix breakage trying to use -d with multiple directories (not tested).
7) Actually use $interactive variable.
8) Update usage().
9) Note original RCSID for my shell script; take over as MAINTAINER.
Tested by: gshapiro (this revision was used in adding sendmail)
fc010c8c8b