[MacPorts] #21640: MacPorts patch generation script

[MacPorts]

#21640: MacPorts patch generation script
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 Reporter:  royliu@…            |       Owner:  macports-tickets@…                   
     Type:  submission          |      Status:  new                                  
 Priority:  Normal              |   Milestone:                                       
Component:  contrib             |     Version:                                       
 Keywords:                      |        Port:                                       
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Comment(by royliu@…):

 I updated the script to be more robust, like handling filenames with
 spaces.  See attached.

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Ticket URL: <http://trac.macports.org/ticket/21640#comment:2>
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