Our users have occasionally encountered connection resets when running postreview.py from remote locations with poor connectivity. These errors are transient, so adding retries when postreview encounters a timeout.

This is available in my timeout_retries branch...

https://github.com/atagar/rbtools/commit/08c288484576503768c29e87c9b6cb08529fec90
https://github.com/atagar/rbtools/tree/timeout_retries

This exact change is untested, but we've been running an identical change with RBTools 0.3 for three months now without any issues.