[MacPorts] #20387: update libusb to 1.0.2

[MacPorts]

#20387: update libusb to 1.0.2
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 Reporter:  brett@…             |       Owner:  rwilcox@…          
     Type:  request             |      Status:  new                
 Priority:  Normal              |   Milestone:                     
Component:  ports               |     Version:  1.7.1              
 Keywords:                      |        Port:  libusb             
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 0.1.12 is > 3 years out of date

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Ticket URL: <http://trac.macports.org/ticket/20387>
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