[Buildbot] #2944: Inconsistency in parameter naming

[Buildbot trac]

#2944: Inconsistency in parameter naming
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Reporter:  sa2ajj            |      Owner:
    Type:  defect            |     Status:  new
Priority:  patches-accepted  |  Milestone:  0.9.0
 Version:  master            |   Keywords:  docs
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 !SVNPoller uses `svnurl`, while the corresponding master-side source
 checkout step uses `repourl`.

 This needs to be fixed.

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Ticket URL: <http://trac.buildbot.net/ticket/2944>
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