Changed CMake files and #includes to allow Qt5 while still being backwards compatible with Qt4. Add Qt5 (qtbase) directory to CMAKE_PREFIX_PATH to use Qt5.
Qt5OpenGL includes were not included correctly
Merge branch 'master' of git://github.com/gwaldron/osgearth
SingleThreaded Qt
Added code in MP engine to disable mipmapping on NPOT textures.
Logging level / docs updates
Docs update: start/deps
Merge branch 'master' of https://github.com/rooi/osgearth into rooi-master

Conflicts:
	src/applications/CMakeLists.txt
	src/osgEarthDrivers/wcs/WCS11Source.cpp
	src/osgEarthQt/MultiViewerWidget
	src/osgEarthQt/MultiViewerWidget.cpp
	tests/feature_geom.earth
	tests/shadows.earth
More Qt5 updates.
overlayviewer: automatically adjust to screen size
Merge branch 'master' of github.com:gwaldron/osgearth
Fixes to TMSPackager regarding min and max levels.
Merge branch 'master' of https://github.com/gwaldron/osgearth
Fix a texture, change default min pitch
Removed conditional add of FeatureEditing in osgEarthAnnotation project.
Merge branch 'master' of https://github.com/gwaldron/osgearth
Merge branch 'master' of github.com:gwaldron/osgearth
Modularize shadergen
Splats in progress.
Changed logging level in FeatureCursorOGR for invalid geometies