Added the avatar mohawk
Fixes per review
Fix for starfield rendering on Oculus: put inter-pupil translation in
modelview matrix where it belongs, don't reset perspective projection for
starfield.
Removed unused nearCenter/farCenter from ViewFrustum.
Disable voxel textures by default.
Hide the cursor when in fullscreen Oculus mode.
make dragonfly move in circle instead of line
lower voxel send rate
keep a pointer to owning agent in AgentData
maintain a pointer to owning avatar from HeadData
pass the owning agent for VoxelAgentData constructor
use a NULL default for owningAvatar to simplify constructors