[macports-ports] branch plplot created (now 986eb72)

[Marius Schamschula]

Marius Schamschula (Schamschula) pushed a change to branch plplot
in repository macports-ports.

      at 986eb72  plplot: update to version 5.13.0

This branch includes the following new commits:

     new 986eb72  plplot: update to version 5.13.0

The 1 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "add" were already present in the repository and have only
been added to this reference.