[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:  update              |      Status:  new                
 Priority:  Normal              |   Milestone:                     
Component:  ports               |     Version:  1.7.1              
 Keywords:                      |        Port:  libusb             
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Comment(by toby@…):

 added libusb1 (libusb 1.0.2) in r54136, will investigate libusb-compat as
 a replacement for the current libusb port

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Ticket URL: <http://trac.macports.org/ticket/20387#comment:3>
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