[Galene] Galene client library for Java (Android)

[Juliusz Chroboczek <jch@irif.fr>]

Dear all,

I wanted to make some updates to the native client[1], and found out that
I am no longer able to compile it with a new version of Android Studio.
Unfortunately, the Android ecosystem is not friendly to free software: it
is not possible to maintain an Android app without being a full-time
Android developer.

[1]: https://galene.org/android/

For that reason, I've decided to abandon the native app.  I've extracted
the Galene-specific code, and put it in its own repository[2] in case
somebody else wants to work on an Android native app.

[2]: https://github.com/jech/GaleneClientLibrary

Aside: the native app was a convenient way to have a conversation over
Galene without launching a full browswer.  I really hope someone will
produce a convenient Android app, but I simply don't have the manpower to
deal with the gratuitious complexity of the Android ecosystem.

Sorry for that,

-- Juliusz