[fusion-trac] #185: allow mapfile override in URL by query param for MapServer

[Fusion]

#185: allow mapfile override in URL by query param for MapServer
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   Reporter:  madair     |       Owner:  madair
       Type:  defect     |      Status:  new   
   Priority:  P2         |   Milestone:  1.1   
  Component:  MapServer  |     Version:  1.1.0 
   Severity:  Trivial    |    Keywords:        
External_id:             |       State:  New   
    Browser:  All        |          Os:  All   
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 similar to the MapGuide 'theme' query param, allow setting of mapfile in
 the application URL.  This should be consistent with path conventions
 defined by #67

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Ticket URL: <http://trac.osgeo.org/fusion/ticket/185>
Fusion <http://trac.osgeo.org/fusion>
Fusion is a web-mapping application development framework for MapServer and MapGuide OS.