dolphin/Externals/libusb/DOLPHIN

Dolphin-specific changes (as of 2016-11-20)
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- removed all toplevel directories save msvc/ & libusb/
- removed all files save AUTHORS, Changelog, COPYING, INSTALL, NEWS,
  PORTING, README and TODO
- patched the VS project file to insert dolphin-specific props
Externals: Update libusb to version 1.0.21 1.0.21 adds a usbdk backend, which may be helpful as it could be used in the future to work around the missing isochronous transfer support for WinUSB backends. Here is the full changelog (from libusb). 2016-10-01: v1.0.21: * Core: Refactor code related to transfer flags and timeout handling * Darwin: Ignore root hub simulation devices * Darwin: Improved support for OS X El Capitan * Darwin: Work around devices with buggy endpoint descriptors * Darwin: Do not use objc_registerThreadWithCollector after its deprecation * Darwin: Use C11 atomics on 10.12+ as the OS atomics are now deprecated * Linux: Support preallocating kernel memory for zerocopy USB * Linux: Deal with receiving POLLERR before all transfers have completed * Solaris: Add solaris backend * Windows: Add Visual Studio 2015 support * Windows: Add usbdk backend * Prevent attempts to recursively handle events * Fix race condition in handle_timeout() * Allow transferred argument to be optional in bulk APIs * Various other bug fixes and improvements 2016-11-20 13:07:07 +00:00			`Dolphin-specific changes (as of 2016-11-20)`
Externals: Clean up some unneeded files from libusb And add a DOLPHIN file recapitulating the changes from upstream 2015-02-12 00:06:38 +00:00			`-------------------------------------------`

			`- removed all toplevel directories save msvc/ & libusb/`
			`- removed all files save AUTHORS, Changelog, COPYING, INSTALL, NEWS,`
			`PORTING, README and TODO`
			`- patched the VS project file to insert dolphin-specific props`