Import & repackage 0.9.1

As discussed, here's an update for thrift 0.9.1. You may want to pull in the 0.9.1 tag from this repo too, can't include that stuff in a PR.

If all looks good, I'll finalize my forks of thrift-compiler + libthrift-java + python-thrift. I've already given them a  quick once-over, but missed the required change to files.d/configure.ac first time through so they still need some work.