Update decode-request-type utility to work with python 3.
Update decode-request-type utility to work with python 3.

swinman/pyusb,kopchik/pyusb,h3nj3/pyusb,karlp/pyusb,rabryan/pyusb,makerbot/pyusb,rabryan/pyusb,karlp/pyusb,kopchik/pyusb,h3nj3/pyusb,AlanJAS/pyusb,AlanJAS/pyusb,makerbot/pyusb,swinman/pyusb