[Thomas:
- fix commit title
- change libusb back to a mandatory dependency, since even though
there is a --disable-libusb option, it has no effect, and the code
fails to build due to missing libusb.h
- add hash file, noticed by Arnout
- remove host-perl dependency, noticed by Arnout
- rewrap Config.in help text, noticed by Arnout.]
Signed-off-by: Juha Rantanen <juha@codercoded.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
