[MacPorts] #22476: Add port for the Go Programming Language

[MacPorts]

#22476: Add port for the Go Programming Language
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 Reporter:  luis.beca@…          |       Owner:  macports-tickets@…                   
     Type:  request              |      Status:  new                                  
 Priority:  Normal               |   Milestone:                                       
Component:  ports                |     Version:  1.8.1                                
 Keywords:                       |        Port:  go gc gccgo                          
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Comment(by snc@…):

 I've updated the portfile:
  * overrides the build phase entirely
  * moves downloaded files from `${distname}` to `${name}` to avoid failing
 a test with a "." in the directory path.  Note: changing `${distname}`
 causes the mercurial download to fail.

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Ticket URL: <http://trac.macports.org/ticket/22476#comment:7>
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