[MacPorts] #19315: Update JRuby to stable version 1.2.0

[MacPorts]

#19315: Update JRuby to stable version 1.2.0
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 Reporter:  karrick@…          |       Owner:  macports-tickets@…                   
     Type:  enhancement        |      Status:  new                                  
 Priority:  Normal             |   Milestone:  Port Enhancements                    
Component:  ports              |     Version:  1.7.1                                
 Keywords:                     |        Port:  JRuby                                
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 Update JRuby's Portfile for stable release 1.2.0.

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Ticket URL: <http://trac.macports.org/ticket/19315>
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