Simplifies the way setSource is handled on Android. It tries to mount
first and if that fails it will copy to memory and mount.
The /sdcard/lovegame fallback is moved to GameActivity.java.
Also a flag is added (mustCacheArchive) that will copy the game.love
file to the cache dir, so it can be mounted directly and not loaded to
memory, which does not work for large .love files.
The Filesystem.cpp change was also submitted to rude/love repo in this
push request: https://bitbucket.org/rude/love/pull-requests/99
Martin Felis
cigumo
Tiago Koji Castro Shibata
Henrique Gemignani Passos Lima