Merge remote branch 'upstream/master'
Morphing experiments
Detail texture
Add osgEarthUtil::DetailTexture
add noise tex
Make mp the default terrain engine
Merge branch 'master' into topic-morphing
Experiments in LOD morphing with elevation_tile_size
merge master
Fix compile error after master merge
Bing.
Added correct naming for osgEarthUtil on all platforms and build type
osgearth_contour example: update docs, remove quadtree line
add BingOptions, rename tile source
Merge pull request #309 from mathieu/osgDB_earth_osgEarthUtil

Added correct naming for osgEarthUtil on all platforms and build type
Bing.
Merge branch 'topic-bing'
Merge branch 'master' of github.com:gwaldron/osgearth
Add bing.earth example
Bing/Merc updates - bug fix, cannot use texcoordarray cache for mercator locator.