[MacPorts] #27261: Bump py-pyqt4 to 2.8.1; add ccache support

[MacPorts]

#27261: Bump py-pyqt4 to 2.8.1; add ccache support
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 Reporter:  michaelld@…             |       Owner:  macports-tickets@…                   
     Type:  enhancement             |      Status:  new                                  
 Priority:  Normal                  |   Milestone:                                       
Component:  ports                   |     Version:  1.9.2                                
 Keywords:                          |        Port:  py-pyqt4                             
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 Summary says it all; port is owned, so I'm posting a patch.  I've already
 updated the other pyXX-pyqt4 ports.

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Ticket URL: <https://trac.macports.org/ticket/27261>
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