Include stdint.h before libusb.h
Include stdint.h before libusb.h

Ignore-this: e9726d67050718309ed2b2848602193c

Fixes FTBFS on kfreebsd-*.

darcs-hash:20110702160757-0445d-5b4e694b33687cb8a9cb6838d1ec4bf603a33612

diml/ocaml-usb,diml/ocaml-usb