[MacPorts] #41740: Update ruby-build to version 20131206

[MacPorts]

#41740: Update ruby-build to version 20131206
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 Reporter:  gvimrc@…  |      Owner:  macports-tickets@…
     Type:  update    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.2.1
 Keywords:  Ruby      |       Port:  ruby-build
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 ruby-build on git is now at version 20131206

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Ticket URL: <https://trac.macports.org/ticket/41740>
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