[MacPorts] #22034: update qt4-mac to 4.5.3

[MacPorts]

#22034: update qt4-mac to 4.5.3
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 Reporter:  adfernandes@…             |       Owner:  erickt@…           
     Type:  update                    |      Status:  new                
 Priority:  Normal                    |   Milestone:                     
Component:  ports                     |     Version:  1.8.1              
 Keywords:                            |        Port:  qt4-mac            
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Comment(by sharky@…):

 Given how long it takes to build Qt, it might be worth combining the
 update to 4.5.3 with #21960

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Ticket URL: <http://trac.macports.org/ticket/22034#comment:2>
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