The : character is special in TroveDependencies, so DependencyClass.thawDependency will not work when no flags exist in the dependency.  Handle this in TroveDependencies rather than complicating DependencyClass.thawDependency.
The : character is special in TroveDependencies, so DependencyClass.thawDependency will not work when no flags exist in the dependency.  Handle this in TroveDependencies rather than complicating DependencyClass.thawDependency.

fedora-conary/conary,fedora-conary/conary,fedora-conary/conary,fedora-conary/conary,fedora-conary/conary