* Disallow ":", ".", and "\" from topology names

* Errors in multilang subprocesses that go to stderr will be captured and logged to the worker logs (thanks vinodc)

* Use exec instead of forked child process for daemon processes (thanks ept)

* Zookeeper connection timeout is now configurable (via storm.zookeeper.connection.timeout config)

* Storm is now less aggressive about halting process when there are Zookeeper errors, preferring to wait until client calls return exceptions.

* Can configure Zookeeper authentication for Storm's Zookeeper clients via "storm.zookeeper.auth.scheme" and "storm.zookeeper.auth.payload" configs