Rev 1685: Fix versioned file joins with empty targets. in /home/robertc/source/baz/faster-joins/

[Robert Collins]

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revno: 1685
revision-id: robertc at robertcollins.net-20060424091132-5252fbb8a99e4c91
parent: pqm at pqm.ubuntu.com-20060424012027-0017c749480ad462
committer: Robert Collins <robertc at robertcollins.net>
branch nick: faster-joins
timestamp: Mon 2006-04-24 19:11:32 +1000
message:
  Fix versioned file joins with empty targets.
modified:
  bzrlib/tests/interversionedfile_implementations/test_join.py test_join.py-20060302012326-9b5e9b0f0a03fedc
  bzrlib/tests/test_versionedfile.py test_versionedfile.py-20060222045249-db45c9ed14a1c2e5
  bzrlib/versionedfile.py        versionedfile.py-20060222045106-5039c71ee3b65490
  bzrlib/weave.py                knit.py-20050627021749-759c29984154256b