Fix for new version of cmake
Removed unnecessary list(LENGTH ...)
first cut at registered quads to reduce copies of constantly changing quads
rename parameters and reuse previously registered quad if geometry didn't change
fix comments
Merge branch 'master' of https://github.com/highfidelity/hifi into gpuStreamizing
remove hair
Merge pull request #4013 from Atlante45/cmake_fix

Fix for new version of cmake
fix one more case of animaiton stutter
Merge pull request #4021 from ZappoMan/removeHair

Haircut at Philip's request
Merge pull request #4022 from ZappoMan/animationFrameIndex

fix one more case of animaiton stutter
Merge pull request #4020 from ZappoMan/gpuStreamizing

Improvements to GeometryCache::renderQuad()
Merge branch 'master' of https://github.com/highfidelity/hifi into temp1