ULINK driver: port from libusb-0.1 to libusb-1.0 API

ULINK driver: port from libusb-0.1 to libusb-1.0 API

The ULINK driver now uses libusb-1.0 calls (synchronous device I/O) directly
(not the common layer provided by libusb1_common.c)

Successfully tested with ULINK probe and STM32F103 (debug, erase and write
flash).

Change-Id: Ic037a3582db85e49a8cc1ec0dd36f629e4757929
Signed-off-by: Martin Schmölzer <martin.schmoelzer@student.tuwien.ac.at>
Reviewed-on: http://openocd.zylin.com/1459
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>