Add Repo.updateinfo_fn.
Load UpdateInfo.xml during the sack preparation.
test: really don't break other tests with the DRPM fixture
test: support adding directory repos to Base stubs
test: add updateinfo to the testing repository
Add basic updateinfo command.
Add "updateinfo summary" command.
Add "updateinfo available" command.
Add "updateinfo list" command.
Add "updateinfo info" command.
Add "-v updateinfo info" command.
Add "updateinfo [<output>] installed" command.
Add "updateinfo [<output>] updates" command.
Add "updateinfo [<output>] all" command.
Add "updateinfo [<output>] [<availability>] [<advisory>...]" command.
Add "updateinfo [<output>] [<availability>] [<package-name>...]" command.
Add "updateinfo [<output>] [<availability>] enhancement" command.
Add "updateinfo [<output>] [<availability>] bugfix" command.
Add "updateinfo [<output>] [<availability>] security" command. (RhBug:850912)
lint: fix convention violations in the new source files