[MacPorts] #43927: gerbil: Update to 1.0b

[MacPorts]

#43927: gerbil: Update to 1.0b
--------------------+--------------------
 Reporter:  cal@…   |      Owner:  cal@…
     Type:  update  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.3.0
 Keywords:          |       Port:  gerbil
--------------------+--------------------
 This ticket is a reminder for me to update Gerbil. This needs to be done:
  - Change homepage to http://www.gerbilvis.org/
  - Add dependency on `gdal`. Gerbil works without this, but it's much
 better with the dependency.

-- 
Ticket URL: <https://trac.macports.org/ticket/43927>
MacPorts <http://www.macports.org/>
Ports system for OS X