emscripten build fails on building tolua
We need to use system tolua when making an emscripten build. Recent change to make own our tolua the default did not take that in the account, so now also emscripten builds try to use our tolua by default, and fail.
We need to use system tolua when making an emscripten build. Recent change to make own our tolua the default did not take that in the account, so now also emscripten builds try to use our tolua by default, and fail.