libusb1: upgrade from 1.0.19 to 1.0.20

This updates libusb1 from 1.0.19 to 1.0.20

2015-09-13: v1.0.20
* Add Haiku support
* Fix multiple memory and resource leaks (#16, #52, #76, #81)
* Fix possible deadlock when executing transfer callback
* New libusb_free_pollfds() API
* Darwin: Fix devices not being detected on OS X 10.8 (#48)
* Linux: Allow larger isochronous transfer submission (#23)
* Windows: Fix broken builds Cygwin/MinGW builds and compiler warnings
* Windows: Fix broken bus number lookup
* Windows: Improve submission of control requests for composite devices
* Examples: Add two-stage load support to fxload (#12)
* Correctly report cancellations due to timeouts
* Improve efficiency of event handling
* Improve speed of transfer submission in multi-threaded environments
* Various other bug fixes and improvements
The (#xx) numbers are libusb issue numbers, see ie:
https://github.com/libusb/libusb/issues/16

(From OE-Core rev: 641a9454fbb25f1458bb8f96cbfada3e0da98dee)

Signed-off-by: Jens Rehsack <sno@netbsd.org>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/libusb/libusb1_1.0.20.bb

@@ -11,8 +11,8 @@ BBCLASSEXTEND = "native nativesdk"
 SRC_URI = "${SOURCEFORGE_MIRROR}/libusb/libusb-${PV}.tar.bz2 \
           "
 
-SRC_URI[md5sum] = "f9e2bb5879968467e5ca756cb4e1fa7e"
-SRC_URI[sha256sum] = "6c502c816002f90d4f76050a6429c3a7e0d84204222cbff2dce95dd773ba6840"
+SRC_URI[md5sum] = "1d4eb194eaaa2bcfbba28102768c7dbf"
+SRC_URI[sha256sum] = "cb057190ba0a961768224e4dc6883104c6f945b2bf2ef90d7da39e7c1834f7ff"
 
 S = "${WORKDIR}/libusb-${PV}"