Fix removeShader bug in VP; cleaned up DetailTexture and ContourMap to properly release units
Removed old 'lodblending' references in the MP driver code
FeatureModelGraph: add the ability to exclude style-expression features by returning a null style
Merge branch 'master' of github.com:gwaldron/osgearth
Hooked back up --vert option in osgearth_imageoverlay and the ImageOverlayEditor.
Merge branch 'master' of github.com:gwaldron/osgearth
Added feature_style_selector example.
Merge branch 'master' of github.com:gwaldron/osgearth
Clean up unused code in TileGroup
Renamed ElevationMorph to LODBlending
Renamed the elevation_morph.earth example to lod_blending.earth
LOD blending: support OSG_MAX_PAGEDLOD cache by reseting the born date in TileNode properly (single view impl)
LODBlending: added vertical scale support
Added "noise" as an optional lib name in FindLibNoise.cmake.
Merge branch 'master' of github.com:gwaldron/osgearth
Revert HeightFieldUtils triangulate support to properly mirror how TileModelCompiler creates traingles.
Fix GLES support in terrain effects shaders
Merge branch 'master' of github.com:gwaldron/osgearth
Added --index option to osgearth_seed to let it take a shapefile as input for the bounds.
Merge branch 'master' of github.com:gwaldron/osgearth