C client & reconfiguration

[Alexander Shraer]

Hi All,

If you're using (or familiar with) the ZooKeeper C client and would
like to help out with ZooKeeper 107, we still need a couple of
basic C tests for it. There are currently plenty of Java client and
server tests, including all kinds of failure scenarios,
so the C client tests should really just test the basic C reconfiguration API.

Thanks,
Alex