[MERGE] Hidden bug in `bzr info` when dirstate tree is write-locked

[Alexander Belchenko]

Alexander Belchenko has voted +1 (conditional).
Status is now: Conditionally approved
Comment:
I think knownFailure should be generated only for WT4 format. It 
specific for dirstate+OS locks, so we don;t need to worry about such 
knownFailure in the future when new format will be available.

For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C4627ED17.1020406%40arbash-meinel.com%3E