[MacPorts] #18126: Update ruby19 from rc1 to rc2

[MacPorts]

#18126: Update ruby19 from rc1 to rc2
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 Reporter:  neufelry@…          |       Owner:  macports-tickets@…                   
     Type:  enhancement         |      Status:  new                                  
 Priority:  Normal              |   Milestone:  Port Updates                         
Component:  ports               |     Version:  1.7.0                                
 Keywords:                      |        Port:  ruby19                               
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 Updated md5 and version number for ruby19 port.

 Diff attached.

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Ticket URL: <http://trac.macports.org/ticket/18126>
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