[MacPorts] #30074: Update jruby port to 1.6.3

[MacPorts]

#30074: Update jruby port to 1.6.3
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 Reporter:  jendave@…          |       Owner:  macports-tickets@…                   
     Type:  defect             |      Status:  new                                  
 Priority:  Normal             |   Milestone:                                       
Component:  ports              |     Version:  1.9.2                                
 Keywords:  haspatch           |        Port:  jruby                                
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 Summary of changes for 1.6.3 can be found here:
 http://jruby.org/2011/07/07/jruby-1-6-3.html

 Major features of 1.6.x

     Ruby 1.9.2 language and API compatibility
         Not implemented Encoding::Converter, ripper

     Improved Ruby call performance

     Built-in profiler (–profile, –profile.graph)

     RSpec no longer bundled

     C Extension support (experimental)

     RubyGems Maven support (preview)

     Improved compatibility and user experience on Windows

     jruby-complete.jar now includes 1.9 standard library

     Embedding API refinements

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Ticket URL: <https://trac.macports.org/ticket/30074>
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