[Live-demo] [OSGeo] #629: osgearth script improvements

[OSGeo]

#629: osgearth script improvements
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 Reporter:  hamish   |       Owner:  live-demo@…              
     Type:  task     |      Status:  new                      
 Priority:  minor    |   Milestone:                           
Component:  LiveDVD  |    Keywords:  4.5, osgearth            
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Comment(by darkblueb):

 specifically for VirtualBox, the user must take a second step after
 running, and install the VBox additions pack. Once the additions are
 installed, OpenGL is typically available. This should be explicit somehow.

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Ticket URL: <http://trac.osgeo.org/osgeo/ticket/629#comment:4>
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