[MacPorts] #20719: ghc: update to 6.10.4

[MacPorts]

#20719: ghc: update to 6.10.4
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 Reporter:  ryandesign@…             |       Owner:  gwright@…           
     Type:  update                   |      Status:  new                 
 Priority:  Normal                   |   Milestone:                      
Component:  ports                    |     Version:  1.7.1               
 Keywords:                           |        Port:  ghc                 
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Changes (by jmr@…):

  * type:  request => update


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Ticket URL: <http://trac.macports.org/ticket/20719#comment:1>
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