unison-2.9.1, unison-2.9.20, unison-2.10.2

[Andrew Schulman]

> I'm missing a hint how to handle the old unison package.  There should
> be an empty package, say, unison-2.10.2-4, which has a matching setup.hint
> file.  See fileutils for an example.

Done:

http://home.comcast.net/~andrex/cygwin/unison/setup.hint
http://home.comcast.net/~andrex/cygwin/unison/unison-2.10.2-4.tar.bz2
http://home.comcast.net/~andrex/cygwin/unison/unison-2.10.2-4-src.tar.bz2