bug#30894: Submission of patch for Add r-abc

[Ricardo Wurmus]

Hi Sahithi,

> I have done adding r-abc. And the build was success.

Excellent!  I also built it without problems.

I couldn’t apply it cleanly after making modifications to r-abc-data,
but that’s not your problem.  I performed these minor changes:

* changed license from gpl3 to gpl3+
* added a beginning to the description.

Pushed the patch to the master branch with commit 82c8e0ae0.

Thanks again!

~~ Ricardo