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
V8 javascript engine update, intermediate commit #1 (broken)
Merge branch 'master' of git://github.com/gwaldron/osgearth
Picker: set default limit mode to NEAREST; set Z thickness in PrimitiveIntersector for better pick behavior
Fix gcc compile error, and some format/comments
Fixed TMSPackager to use hasData instead of hasDataAtLOD to determine if subdivision needs to occur.
Merge branch 'master' of https://github.com/gwaldron/osgearth
Fix: add current node to lighting uniform helper consideration; change default overlay resolution ratio to 3.0
CMAKE: added git SHA to the osgEarth version readout
Merge branch 'master' of github.com:gwaldron/osgearth
Add AlphaEffect utility and add Control::setOpacity
Updated javascript plugin to work with the latest V8.
Merge branch 'master' of https://github.com/gwaldron/osgearth
Updated javascript plugin to work with the latest V8.
Merge branch 'topic-v8-update' of https://github.com/gwaldron/osgearth into topic-v8-update
Updated CMake files to work with the latest V8.
Line of sight fixes

Making sure _start and _end are valid in LinearLineOfSight before
calling compute.
Using a DPLineSegment intersector in Terrain::getHeight.
making sure makeAbsolute succeeds in GeoPoint::transformZ before calling
toWorld.
Update all HandleScopes to take an Isolate.
Changed terrainChanged for LOS to not create an extra group.

The extra group isn't necessary since the tile is already merged.