refactoring

filterBranch should be reusable for copy-branch command.

Changed LogVariety to differentiate between LocationLog and UrlLog;
only location logs contain uuids and need to be filtered by uuid,
while url logs do not. This does not change current behavior,
but it will let filterBranch be reused without filtering url logs
incorrectly.

Annex/Branch.hs

@@ -678,7 +678,7 @@ performTransitionsLocked jl ts neednewlocalbranch transitionedrefs = do
 		trustmap <- calcTrustMap <$> getStaged trustLog
 		remoteconfigmap <- calcRemoteConfigMap <$> getStaged remoteLog
 		-- partially apply, improves performance
-		let changers' = map (\c -> c config trustmap remoteconfigmap) changers
+		let changers' = map (\c -> c trustmap remoteconfigmap config) changers
 		(fs, cleanup) <- branchFiles
 		forM_ fs $ \f -> do
 			content <- getStaged f