Some changes to make valgrind happy
Update Oculus files to 0.4.3
Update oculus.cpp to support 0.4.3
Remove trailing whitespace
Fixing Linux rendering - calculate display size from SDL, not from hmd->Resolution; make distortion caps configurable at runtime
Added environment variable to force window at a specific position
ovrHmd_GetEnabledCaps no longer includes ovrHmdCap_ExtendDesktop
Added OVR_NOMIRROR environment variable