Rescale eye positions to compensate for growing heads.
Don't override the lookat positions we receive for others.
Merge pull request #1177 from ey6es/master

Fix for jittery eyes.
Work around precision issues with multiplying matrices with high translation
magnitudes (by using relative translation).
Merge pull request #1179 from ey6es/master

Fix for Squigglevision effect on meshes at high(er) translation magnitudes.
Merge pull request #1178 from ZappoMan/bugfixes

Possible fix to crash in voxel server