RPI STUFF is a collecion of patches for enlightenment, drm, mesa and efl. This patches are needed as dirty hack to improve the support the Tizen OS on a Raspberry Pi 2. The guide is available here: https://wiki.tizen.org/wiki/How_to_use_Mesa_with_GL/EGL_GPU_acceleration_and_DRM_for_Tizen_3.0_TV_profile_%28wayland_backend%29_on_RPI2