Switched from loading FBX and FST simultaneously to loading FST first, then
using its filename and texdir properties (as Faceshift does) to locate the
corresponding model.  Also fixed a bug with the fallback models (they were
invisible after second failure).
Merge branch 'master' of https://github.com/highfidelity/hifi
These need to be FST files, too.
Merge branch 'master' of https://github.com/highfidelity/hifi
Merge branch 'master' of https://github.com/highfidelity/hifi
Basic LOD switching based on distance to camera.
Merge branch 'master' of https://github.com/highfidelity/hifi
Wait until each LOD level is actually requested before we start loading;
before a level is loaded, try to use the closest already-loaded level.
Add some hysteresis on the LOD switching to prevent rapid switching back
and forth.
Removed debugging code.
Fix for head appearing at wrong position for a single frame.
Fixes for OS X warnings.
Merge branch 'master' of https://github.com/highfidelity/hifi
Merge branch 'master' of https://github.com/highfidelity/hifi
Adjust offset when skipping parts that don't match the translucency setting.
Closes #2001.
Added sanity check for zero vertices.
Merge branch 'master' of https://github.com/highfidelity/hifi
Merge pull request #1982 from ey6es/master

Load FST file before FBX, use its filename and texdir properties like Faceshift does.  Fixed a bug with the fallback model and added basic LOD switching based on distance.