[SCM] osgearth branch, master, updated. a9fc5ef4667759fc5e4bd98e2d43ed5d4c1d8a7d

[Pirmin Kalberer]

The following commit has been merged in the master branch:
commit bc9beddb224197f0a1c2345073f6536e76108e2d
Merge: 0ebda7b8f78cbdd060c1c45bd77f32083a44f794 c12c1ea38e72de4c0f29ae71c8da024f65e5aabd
Author: Pirmin Kalberer <pka at sourcepole.ch>
Date:   Mon Feb 28 22:57:23 2011 +0100

    Merge branch 'upstream'


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osgEarth terrain rendering toolkit