[Buildbot] #2942: Implement "slugs" for builders

[Buildbot trac]

#2942: Implement "slugs" for builders
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Reporter:  dustin       |       Owner:
    Type:  enhancement  |      Status:  new
Priority:  major        |   Milestone:  0.9.0
 Version:  master       |  Resolution:
Keywords:               |
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Comment (by dustin):

 Part of #2635

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Ticket URL: <http://trac.buildbot.net/ticket/2942#comment:3>
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