Description of problem: We're trying to remove PyXML from Fedora 18 because it is dead upstream and has the dubious behaviour of replacing the stdlib's xml module with its own code when it is installed. I reviewed the xml code in synce-sync-engine and it looks like the package was ported from PyXML to libxml2-python at some point in the past. So we should be able to just drop the Requires: PyXML from the package.