Changed the structure a bit; moved stuff into folders
Changed EXPOSE macros to EXPORT_API; just cause they were fewer
Removed unity.hpp in favour of RustNative.h; used as precompiled header
Added native code for PVT pre-pass
Added native code for Amplify Motion skinning motion vector calculation
Added native low-level raw copy texture region meant for real-time GPU-based PVT cache compression
Added SSE2 (adding to SSE) support
Added GL (all), GLEW (win, linux) and pthreads (win) dependencies
Fixed noise.cpp warnings (C4244) on windows target
Updated builds for all platforms; still untested on OSX and Linux; didn't copy to rust_reboot