bug 1013354: Implement openh264 update manifests in AUS - allow for version+buildTarget in hacky h264 implementation
Backout bug 1021018 because it's breaking in dev.

This reverts commit 29cab31ea513edb41bb365fcdf1940380a4eaf8d.
Commit initial blob xml patch
Add a couple of tests for nightly style updates.
Fix bug where exception is raised if partials or completes is missing from a multiple update blob.
Merge branch 'blob-xml-2' of github.com:bhearsum/balrog into blob-reorg