[Buildbot] #2702: Inform the user if wrong SQLAlchemy is installed

[Buildbot trac]

#2702: Inform the user if wrong SQLAlchemy is installed
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Reporter:  dustin       |       Owner:
    Type:  enhancement  |      Status:  new
Priority:  major        |   Milestone:  0.9.+
 Version:  0.8.8        |  Resolution:
Keywords:  database     |
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Comment (by ewong):

 Since https://github.com/buildbot/buildbot/pull/1075 has been merged,
 should this ticket be closed?

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Ticket URL: <http://trac.buildbot.net/ticket/2702#comment:3>
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