bug#8565: gzip/bzip2/output-hook support for split

[Jim Meyering]

Ari Pollak wrote:
> I've been sitting on this for a few months expecting to finish it, but
> still haven't found the time, so I'm just putting it out there now so
> it isn't lost entirely. It's originally from Chandrakumar Muthaiah:
> http://article.gmane.org/gmane.comp.gnu.coreutils.bugs/15684
> I applied it to the latest git, added some tests, and cleaned it up a bit.

Thank you for working on that.
However, we still don't have a copyright assignment
from Chandrakumar Muthaiah.  Chandrakumar, have you
started the process?

    http://git.sv.gnu.org/cgit/coreutils.git/tree/HACKING#n429

Ari, since you're contributing nontrivial
changes, would you do that, too?

Both of you, please let me know when/if you start the process.