[Buildbot] #2885: Windows: rmdirRecursive() fails if a contained file is opened

[Buildbot trac]

#2885: Windows: rmdirRecursive() fails if a contained file is opened
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Reporter:  dl       |       Owner:
    Type:  defect   |      Status:  new
Priority:  major    |   Milestone:  undecided
 Version:  0.8.9    |  Resolution:
Keywords:  windows  |
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Comment (by sa2ajj):

 Return of `Deferred` is the desired option.

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Ticket URL: <http://trac.buildbot.net/ticket/2885#comment:14>
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