I created this function in the cache to make a generic way to copy
outside files into the cache tree. It makes sense to do this in the
cache, since I want to keep everything self-contained.
I commented out most of the code in libsaria/__init__.py to make it
easier to clean up. I also began work on libsaria/prefs.py for managing
preferences.
NOTE: For the next several commits, the best way to test changes is by
importing libsaria through the python interpreter. Trying to run
ocarina will probably fail.