[Buildbot] #1688: there should be some way to retry builds that fail in setupBuild without submitting new Changes.

[Buildbot trac]

#1688: there should be some way to retry builds that fail in setupBuild without
submitting new Changes.
------------------------+-----------------------
Reporter:  bhearsum     |       Owner:  dustin
    Type:  enhancement  |      Status:  assigned
Priority:  major        |   Milestone:  0.9.+
 Version:  0.8.2        |  Resolution:
Keywords:               |
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Changes (by dustin):

 * milestone:  0.9.0 => 0.9.+


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Ticket URL: <http://trac.buildbot.net/ticket/1688#comment:7>
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