This keeps the numbers of names down to a minimum, and since the config
is placed right next to the script, this keeps tab completion working
nicely when the config file is in place.
The old file name is still supported.
This means you can just do `cd tests/ && ./run-tests` to run the tests now.
You can still override the APK source with the first argument, like:
cd tests/ && ./run-tests /path/to/lots/of/apks/dir
Using `python setup.py install`, things in non-standard python paths need
to be added to the MANIFEST in order for them to be included and installed.
There might be a better solution for this, but I haven't found it.
