[MacPorts] #19934: libpng update to 1.2.37

[MacPorts]

#19934: libpng update to 1.2.37
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 Reporter:  nox@…             |       Owner:  ryandesign@…           
     Type:  update            |      Status:  new                    
 Priority:  Normal            |   Milestone:                         
Component:  ports             |     Version:                         
 Keywords:                    |        Port:  libpng                 
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 Changes:
  * Update to 1.2.37.

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Ticket URL: <http://trac.macports.org/ticket/19934>
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