Added null check to fix crash in BuildGeometryFilter (issue #547).
MPGeometry: clean up unused code
Fix building outlines bug; remove obselete earth files and update some earth file docs
Update version and dates
MPTerrain: alter the createTile() function so it does not try to accumulate parent tile data
Merge branch 'master' into topic-splat
ElevationField
MP updates to optionally speed up tile creation time by disabling mesh optimizers
Crop: better error messages
Fix: lock() with no unlock() in ModelLayer::setLightingEnabled
set new version to 2.6.0
Merge branch 'master' into topic-splat
HTTP debugging cleanup
Splat: shader update to fix warping lods