Add the /d2Zi+ compiler flag for msvc release builds with debug info
Use R_BindVBO/R_BindIBO when creating vbos/ibos

If we don't do this here then glState.currentVBO and glState.currentIBO will be wrong if outside code does not call R_BindNullVBO/IBO. This can cause an OpenGL error later when we try to use glBufferSubData without a currently bound object.
Implement support for GL_ARB_debug_output
Add support for the the compose/application key