change name of adjusted branches to eg adjusted/master(unlocked)

Using adjusted/unlocked/master made lots of git stuff dealing with "master"
complain that it was ambiguous. This new appoach is more like view branch
names, and shows the adjustment right there in the branch display even if
only the basename of the branch is shown.

Annex/AdjustedBranch.hs

@@ -74,22 +74,24 @@ adjustedBranchPrefix :: String
 adjustedBranchPrefix = "refs/heads/adjusted/"
 
 serialize :: Adjustment -> String
-serialize UnlockAdjustment = "unlock"
+serialize UnlockAdjustment = "unlocked"
 
 deserialize :: String -> Maybe Adjustment
-deserialize "unlock" = Just UnlockAdjustment
+deserialize "unlocked" = Just UnlockAdjustment
 deserialize _ = Nothing
 
 originalToAdjusted :: OrigBranch -> Adjustment -> AdjBranch
-originalToAdjusted orig adj = Git.Ref.under base orig
+originalToAdjusted orig adj = Ref $
+	adjustedBranchPrefix ++ base ++ '(' : serialize adj ++ ")"
   where
-	base = adjustedBranchPrefix ++ serialize adj
+	base = fromRef (Git.Ref.basename orig)
 
 adjustedToOriginal :: AdjBranch -> Maybe (Adjustment, OrigBranch)
 adjustedToOriginal b
 	| adjustedBranchPrefix `isPrefixOf` bs = do
-		adj <- deserialize (takeWhile (/= '/') (drop prefixlen bs))
-		Just (adj, Git.Ref.basename b)
+		let (base, as) = separate (== '(') (drop prefixlen bs)
+		adj <- deserialize (takeWhile (/= ')') as)
+		Just (adj, Git.Ref.under "refs/heads" (Ref base))
 	| otherwise = Nothing
   where
 	bs = fromRef b
@@ -217,7 +219,7 @@ updateAdjustedBranch tomerge (origbranch, adj) commitmode =
  -}
 propigateAdjustedCommits :: OrigBranch -> (Adjustment, AdjBranch) -> Annex ()
 propigateAdjustedCommits origbranch (adj, currbranch) = do
-	v <- inRepo $ Git.Ref.sha (Git.Ref.under "refs/heads/" origbranch)
+	v <- inRepo $ Git.Ref.sha (Git.Ref.under "refs/heads" origbranch)
 	case v of
 		Just origsha -> go origsha False =<< newcommits
 		Nothing -> return ()