cleanup in Audio and Util
store avatar position and yaw in file to restore on relaunch
some deletion cleanup in main.cpp
couple of extra line deletions in main.cpp
remove logging of audio stats
Merge pull request #193 from birarda/avatar-file

store avatar position and yaw in a local file
Merge branch 'master' of https://github.com/worklist/hifi
Fixed bug with rendering stars on OS X: was using some weird extension on
Apple rather than standard VBOs.