[1.5 critical] Branch.lock() does not set RemoteRepository.is_locked() == True

[John Arbash Meinel]

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I'm investigating this now, but I just ran into a *really* weird bug. Basically
if you do:

|>> b = bzrlib.branch.Branch.open('bzr+ssh://....')
|>> b.lock_read()
|>> print b.is_locked(), b.repository.is_locked()
True, False

I'm trying to track down why, but it seems to be causing some performance issues
with remote operations that are using get_parent_map(). Because if the remote
repo doesn't think it is locked, it will not cache any of the requests. And
other stuff just plain breaks (bzr log --short bzr+ssh://, fails during
iter_reverse_revision_history() because it thinks the repo isn't locked.)


I'm not going to put out 1.5rc1 unless I can fix this, so stay tuned.

John
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