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

[MacPorts]

#27995: darktable @0.7.1 add +gcc44 and +gcc45 variants
---------------------------------+------------------------------------------
 Reporter:  julians37@…          |       Owner:  ryandesign@…           
     Type:  enhancement          |      Status:  assigned               
 Priority:  Normal               |   Milestone:                         
Component:  ports                |     Version:  1.9.2                  
 Keywords:                       |        Port:  darktable              
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Comment(by julians37@…):

 Darktable prints warnings like this one:

 {{{
 (darktable:29679): Gtk-WARNING **: Unable to locate theme engine in
 module_path: "clearlooks",
 }}}

 These warnings disappear once gtk-engines2 is installed. The second patch
 revision adds this as a dependency.

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Ticket URL: <https://trac.macports.org/ticket/27995#comment:4>
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