[MacPorts] #14431: RFE: boost: Fix variants conflicts

[MacPorts]

#14431: RFE: boost: Fix variants conflicts
---------------------------------+------------------------------------------
 Reporter:  raimue at macports.org  |       Owner:  macports-tickets at lists.macosforge.org
     Type:  defect               |      Status:  new                                  
 Priority:  Normal               |   Milestone:                                       
Component:  ports                |     Version:  1.6.0                                
 Keywords:  boost                |  
---------------------------------+------------------------------------------
 +python24 and +python25 should conflict, as they can't be used at the same
 time. Variants should use `depends_lib-append`, otherwise overall port
 dependencies are overwritten. See attached patch.

-- 
Ticket URL: <http://trac.macosforge.org/projects/macports/ticket/14431>
MacPorts </projects/macports>
Ports system for Mac OS