bug 1105421 - don't pull in prod.txt from dev.txt
bug 1105421 - add vendor libs first to sys.path
bug 1105421 - amend travis.yml file to use vendor/lib/python
move thirdparty to auslib/util
Merge pull request #18 from peterbe/bug-1105421-we-shouldnt-install-prodtxt

Bug 1105421: we shouldn't install prod.txt. r=bhearsum