Added hardware board driver support for the PJRC Teensy line of USB AVR boards.

Added support for the Dataflash mounted on the XPLAIN board. Added new XPLAIN_REV1 board target for the first revision XPLAIN board, which used a different (smaller) Dataflash IC to later revisions.

Make the RNDISEthernetHost Class driver demo print out incomming packets from the attached RNDIS device.

Added new USB_GetHIDReportSize() function to the HID report parser to retrieve the size of a given report by its ID.

More additions to the unfinished HID Host Class Driver.

Added support for the officially recommended layout of the external peripherals connected to the BUMBLEB board.

Added flag to the HID Host Class driver to indicate the currently selected reporting protocol.