Start of GlobeSurfaceShaderSet.getShaderProgram optimization
Free shader program
Remove TODO
Merge remote-tracking branch 'origin/master' into the-need-for-speed
Further optimization of globe shader generation.
Fix jshint warning.
Merge pull request #2346 from AnalyticalGraphicsInc/the-need-for-speed

Optimize GlobeSurfaceShaderSet.getShaderProgram
Merge remote-tracking branch 'origin/master' into display-condition