In Python 2, b'asdf'[0] returns b'a', but in Python 3, it returns 97, which is
the result of ord(b'a'). In other words, there are a lot of ord() calls that
are now unnecessary for Python 3 but still necessary for Python 2.
This can be resolved by using b'asdf'[0:1], which returns b'a' in both versions.
This will be fixed when redtools is merged into the rest of the junk,
but for now the path will just be the cwd.
This is necessary for pokered gbz80disasm.
