Add back in V8_LIBRARY variable on Linux
Merge branch 'v8_linux_20140116' into v8_linux
SpatialReference bug fix (no vdatum conversion in transformFromWorld)
Ocean: work on ocean clipping issues.
Merge pull request #456 from jcummings2/v8_linux

Support V8 JavaScript library on Linux
sky lighting, work in progress
SimpleSkyNode upgrades in progress
SimpleSkyNode: lighting shaders
More work on sky shaders
SkyNode shaders
add lighting effect
update simple sky options
add GL sky
rename lighteffect
Working on getting KML to work better.
Fix silverlining draw order; fix phong lighting setup
simple sky: ramp exposure.
add specular component to the simple sky shader
SimpleSky: fix phong fallback
moved the lighting uniforms helper from mapnode into sky