Modify location log parser to allow future expansion.

Since the logs have just been moved into the git-annex branch, don't need
to worry about backwards compatability with old versions of git-annex that
would fail to parse location logs with extra fields tacked on.

LocationLog.hs

@@ -8,6 +8,8 @@
  -
  - A line of the log will look like: "date N UUID"
  - Where N=1 when the repo has the file, and 0 otherwise.
+ - (After the UUID can optionally come a white space and other data, 
+ - for future expansion.)
  - 
  - Copyright 2010-2011 Joey Hess <joey@kitenet.net>
  -
@@ -65,7 +67,7 @@ instance Read LogLine where
 	-- read without an exception being thrown.
 	-- Such lines have a status of Undefined.
 	readsPrec _ string = 
-		if length w == 3
+		if length w >= 3
 			then maybe bad good pdate
 			else bad
 		where

debian/changelog

@@ -1,6 +1,7 @@
 git-annex (3.20110625) UNRELEASED; urgency=low
 
   * Always ensure git-annex branch exists.
+  * Modify location log parser to allow future expansion.
 
  -- Joey Hess <joeyh@debian.org>  Sun, 26 Jun 2011 21:01:06 -0400
 

doc/todo/tahoe_lfs_for_reals.mdwn

@@ -19,10 +19,3 @@ location log:
 
 This way, each remote can store its own key-specfic data in the same place
 as other key-specific data, with minimal overhead.
-
-Unfortunatly, the current location log parser throws out lines that it 
-cannot parse, so making this change would involve something of a flag day
-upgrade. Also unfortunatly, the location log and other .git-annex/ data
-does not have its own version that can be checked to force an upgrade
-across all clones. It might be best to deal with this at the same time
-the ideas in [[branching]] are done. --[[Joey]]