[MacPorts] #19458: Combine image and archive modes

[MacPorts]

#19458: Combine image and archive modes
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 Reporter:  blb@…             |       Owner:  blb@…           
     Type:  enhancement       |      Status:  new             
 Priority:  Normal            |   Milestone:  MacPorts Future 
Component:  base              |     Version:  1.8.0           
 Keywords:  archive image     |        Port:                  
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Comment(by afb@…):

 And fix #13143, too.

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Ticket URL: <http://trac.macports.org/ticket/19458#comment:2>
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