message: add the mistuba loader CMake option
diff: @@ -171,6 +171,8 @@ option(IRR_BUILD_EXAMPLES "Enable building examples" ON)
  option(IRR_BUILD_TOOLS "Enable building tools (just convert2BAW as for now)" ON)
  +option(IRR_BUILD_MITSUBA_LOADER "Enable irr::ext::MitsubaLoader?" ON)
  +
  option(IRR_BUILD_CEGUI "Enable CEGUI building and integration?" OFF)
  set(THIRD_PARTY_SOURCE_DIR "${PROJECT_SOURCE_DIR}/3rdparty")
  