[MacPorts] #27995: darktable @0.7.1 add +gcc44 and +gcc45 variants

[MacPorts]

#27995: darktable @0.7.1 add +gcc44 and +gcc45 variants
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 Reporter:  julians37@…          |       Owner:  macports-tickets@…                   
     Type:  enhancement          |      Status:  new                                  
 Priority:  Normal               |   Milestone:                                       
Component:  ports                |     Version:  1.9.2                                
 Keywords:                       |        Port:  darktable                            
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 Upstream recommends to build with gcc 4.4 or later [1] so I've added the
 option.  I haven't made it the default since gcc 4.4/4.5 are big downloads
 and can take a long time to build.

 [1] http://darktable.sourceforge.net/install.shtml

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Ticket URL: <https://trac.macports.org/ticket/27995>
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