Upstream an assortment of Ubuntu patches

This is an assortment of patches which fall into three areas:

Upstream some scripts which are used in the Ubuntu kernel testing environment. We run the autotest client under Jenkins, so one of these converts autotest results to JUnit format. The others extract metric data from benchmarks and combine results from multiple tests. These may be useful to others, especially the conversion to JUnit format.

Also, add a dependency on Sphinx which was preventing debian/ubuntu package building from working correctly.

Finally, fix setup.py for the tko directory. In particular, I'd like some closer review from upstream on this one, as you're more familiar than I am with the python setup for autotest. It appears to work in my environment, but I don't actually run autotest server and could be missing something.

Thanks!