Merge branch 'master' of https://github.com/worklist/hifi into view_frustum_work
Changed render_view_frustum() to handle broken camera yaw
- I discovered that the Camera class has a Yaw that is actually
  180deg off of true yaw. So when the avatar is facing at a yaw
  of 0deg, we were setting the camera to 180. This was causing
  the direction vectors to be rotated from where we expected them
  to be, and as a result the frustum was wrong
- I did not fix the camera and the calls to glRotate() since I
 don't yet understan how these work. BUT. I did fix the frustum
 code to fix up this yaw before calculating the vectors
Merge branch 'master' of https://github.com/worklist/hifi into view_frustum_work
fixed a comment
Merge pull request #84 from birarda/master

some logging fixes
Merge branch 'master' of https://github.com/worklist/hifi into view_frustum_work

Conflicts:
	interface/src/main.cpp
Merge pull request #83 from ZappoMan/view_frustum_work

Changed render_view_frustum() to handle broken camera yaw
added "_" to all of Philip's old private members and tidied up the formatting in Head.h some
Merge pull request #85 from Ventrella/master

cleaned up Head.h (renamed members to start with "_")
removed 2 unneeded debug lines
Merge remote-tracking branch 'upstream/master'
Removed negation of front vector which was reversing yaw in avatar skeleton.
reversed x value in hand movement
Merge remote-tracking branch 'upstream/master'
reversed strafe left right, and commented-out updateAvatarHand
add a new SimpleMovingAverage class, replaces CounterStats
Fixed problem with avatars rendering at 2X their location
Merge remote-tracking branch 'upstream/master'
Merge pull request #86 from Ventrella/master

reversed left-right strafe, commented-out updateAvatarHand
add SimpleMovingAverage to each Agent, collect bytes received stats