[MacPorts] #16234: portindex should be atomic

[MacPorts]

#16234: portindex should be atomic
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  Reporter:  ryandesign at macports.org  |       Owner:  macports-tickets at lists.macosforge.org
      Type:  defect                   |      Status:  new                                  
  Priority:  Normal                   |   Milestone:  MacPorts 1.7.0                       
 Component:  base                     |     Version:  1.7.0                                
Resolution:                           |    Keywords:                                       
      Port:                           |  
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Comment(by ryandesign at macports.org):

 Let's use mktemp to make the temporary file in the tmp directory.

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Ticket URL: <http://trac.macports.org/ticket/16234#comment:3>
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