Split lines in the git-annex branch on \r as well as \n, to deal with \r\n terminated lines written by some versions of git-annex on Windows.

This fixes strange displays in some cases, including whereis showing
many duplicate locations, and showing more total copies than actually
exist.

It's unknown if that lead to data loss when eg, dropping. At the moment,
it seems unlikely it could, since the UUID with \r's appended is not the
same as a UUID without, and so no remote matches it.

It's also unknown if \r's can leak in on windows, perhaps when merging the
git-annex branch.

Logs/SingleValue.hs

@@ -16,6 +16,7 @@ module Logs.SingleValue where
 import Annex.Common
 import qualified Annex.Branch
 import Logs.TimeStamp
+import Logs.Line
 
 import qualified Data.Set as S
 import Data.Time.Clock.POSIX
@@ -37,7 +38,7 @@ showLog = unlines . map showline . S.toList
 	showline (LogEntry t v) = unwords [show t, serialize v]
 
 parseLog :: (Ord v, SingleValueSerializable v) => String -> Log v
-parseLog = S.fromList . mapMaybe parse . lines
+parseLog = S.fromList . mapMaybe parse . splitLines
   where
 	parse line = do
 		let (ts, s) = splitword line