Merge branch 'release/0.9.7.2' into develop
Bump version and sync the spec
Merge branch 'release/0.9.7.3'
Merge branch 'release/0.9.7.3' into develop
Clean up some of the masher log output
Refactor our metadata caching code for the Nth time, hopefully fixing #960642
Add a hack^Whook to the DummyBuildsys to untag builds during tests
Add a test for updating metadata after editing an update's details
Add tests to ensure security notices stay in the stable metadata
bump version to 0.9.7.4
Merge branch 'release/0.9.7.4'

Conflicts:
	bodhi/metadata.py
	bodhi/tests/test_metadata.py
Merge with the metadata.py from the develop branch