We now distribute two tarballs, a "normal" one (the default, recommended for users),
and a new strictly source-only one (for Linux distro packagers).
The normal tarball, in addition to including everything from
the source-only one, also includes:
- compiled (`.mo`) locale files (in addition to source `.po` locale files)
- compiled (`_pb2.py`) protobuf files (in addition to source `.proto` files)
- the `packages/` folder containing source-only pure-python runtime dependencies
merges https://github.com/spesmilo/electrum/pull/7594
with follow-ups
d0de44a794