[MacPorts] #19794: pngpp: update to 0.2.3

[MacPorts]

#19794: pngpp: update to 0.2.3
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 Reporter:  guidolorenz@…               |       Owner:  sfiera@…           
     Type:  update                      |      Status:  new                
 Priority:  Normal                      |   Milestone:                     
Component:  ports                       |     Version:  1.7.1              
 Keywords:                              |        Port:  pngpp              
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Changes (by macsforever2000@…):

 * cc: sfiera@… (removed)
  * owner:  macports-tickets@… => sfiera@…


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Ticket URL: <http://trac.macports.org/ticket/19794#comment:1>
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