[MacPorts] #63649: mtpaint: update to 3.50

[MacPorts]

#63649: mtpaint: update to 3.50
---------------------+---------------------
 Reporter:  mascguy  |      Owner:  (none)
     Type:  update   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.7.1
 Keywords:           |       Port:  mtpaint
---------------------+---------------------
 Our port is outdated, and could use a freshening via the latest upstream
 release.

-- 
Ticket URL: <https://trac.macports.org/ticket/63649>
MacPorts <https://www.macports.org/>
Ports system for macOS