[MacPorts] #19834: boost: update to 1.39

[MacPorts]

#19834: boost: update to 1.39
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 Reporter:  arsptr@…                 |       Owner:  macports-tickets@…                   
     Type:  update                   |      Status:  new                                  
 Priority:  Normal                   |   Milestone:                                       
Component:  ports                    |     Version:  1.7.1                                
 Keywords:                           |        Port:  port                                 
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 Enclosed is my attempt at a Portfile for boost 1.39.

 In this release, the configure script has been removed, so the port
 attempts to call bjam directly with the correct arguments. This is simpler
 in some ways actually (eg the patchfile is no longer needed).

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Ticket URL: <http://trac.macports.org/ticket/19834>
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