[thunderbird-lightning/f18] (5 commits) ...Sync thunderbird-mozoptions from thunderbird package

[Orion Poplawski]

Summary of changes:

  70f79bb... - Update to 2.6.4 - Drop caldav patch (*)
  f225204... Fix l10n tarball (*)
  2f81c9e... Exclude cs locale for now - doesn't build (*)
  fbf5323... Fix changelog revision (*)
  70077bc... Sync thunderbird-mozoptions from thunderbird package (*)

(*) This commit already existed in another branch; no separate mail sent