Updated toolchains submodule.
Ignore CORRADE_DEPRECATED() macro in Doxygen.
Remove misleading comment.

We need 2.8.8 for much more things.
Adapted to Corrade changes.
Shaders: doc++
Platform: ignore Sdl2Application title in Emscripten.
Platform: add dummy title setting function to NaClApplication.

So the user doesn't need to wrap it in #ifdefs when porting to NaCl.
Merge branch 'master' into compatibility

Conflicts:
	CMakeLists.txt