Added reference to gdal_data folder.
Merge branch 'master' of https://github.com/gwaldron/osgearth
Add DateTime; update SKyNode to use it
Merge branch 'master' of github.com:gwaldron/osgearth
WIP: saving status of work re controls and iOS
Merge branch 'master' of https://github.com/gwaldron/osgearth

Conflicts:
	src/osgEarthUtil/Controls.cpp
More work enabling controls on iOS.
Finishing first cut of Controls functionality on iOS.
Add the OSGEARTH_DRAPING_FAR_NEAR_RATIO envvar for testing
Merge branch 'master' of github.com:gwaldron/osgearth
Fix: missing image/jpg mime type; support in ArcGIS for mixed type
Fix globe color blending error in MP
Fix: blending issue in MP
FIX #330 - geometry is not displayed accurately in drape/clamp
Add gl_FragDepth write cap to capabilities; fix boolean flip in AnnotationNode
Removed our API key from CloudeMade example to avoid getting more bills.
PrimitiveIntersector: add support for buffered tris
Merge branch 'master' of github.com:gwaldron/osgearth
Work on cache estimator to help you determine if you even want to run a cache operation.
Fix text draw order problem; fix GPU clamp far clip write