Bump to SDL2 2.0.10 & extract .java from SDL2 tarball: merge conflicts fixed#2113

inclement merged 5 commits intokivy:developkivy/python-for-android:developfrom

inclement:etc0de-sdl-bump_conflicts_fixedinclement/python-for-android:etc0de-sdl-bump_conflicts_fixedCopy head branch name to clipboard