[MacPorts] #18549: remove hardcoded paths

[MacPorts]

#18549: remove hardcoded paths
------------------------------+---------------------------------------------
 Reporter:  snc@…             |       Owner:  macports-tickets@…                   
     Type:  defect            |      Status:  new                                  
 Priority:  Normal            |   Milestone:  Port Bugs                            
Component:  ports             |     Version:  1.7.0                                
 Keywords:                    |        Port:  py25-shogun                          
------------------------------+---------------------------------------------
 The /opt/local paths need removed; use variables that can be replaced
 instead.

 Example:  [source:browser/trunk/dports/math/pspp/Portfile#L91 pspp, line
 91]

-- 
Ticket URL: <http://trac.macports.org/ticket/18549>
MacPorts <http://www.macports.org/>
Ports system for Mac OS