Get Interface descriptor bugfix - spec. lang id in request

Let VHCI handle a zero class device with multi interfaces as a composite

In order to avoid complex merge histories, this commit is manually
squashed with followings commits.

commit 3ffc9c1
Merge: fea88db c8e5944
Author: unknown <[email protected]>
Date:   Thu Sep 5 18:28:26 2019 +0800

    fix compatible id for only one interface of zero class device

commit c8e5944
Author: KyungWoon Cho <[email protected]>
Date:   Thu Aug 15 20:42:09 2019 +0900

    Let VHCI handle a zero class device with multi interfaces as a composite

    For zero class device(defined at interface level), a userland usbip had
    fetched class/subclass/protocol information from a first interface
    via usbip session. @hunterize from cezanne#62 pointed out that only the first
    interface was detected and created a patch which do not modify a USB
    class/subclass/protocol. From the his/her idea, a zero class USB device
    with multiple interfaces will be detected as a composite device.

commit fea88db
Author: unknown <[email protected]>
Date:   Fri Aug 16 16:07:51 2019 +0800

    fix for compatible id of one interface 0 class device

commit 5e41d45
Author: Rex Han <[email protected]>
Date:   Mon Aug 12 10:51:54 2019 +0800

    fix wrong protocol for getting configuration descriptor

return stall pid to host and forward reset_pipe_request to device

Followings are commit logs by [email protected].
This work is slightly modified to beautify and remove unused code.
This commit may have a fix for multi configurations device problem.

remove stale stubctl userspace tool

stubctl is no more used, which was a stub device control tool.
Currently, usbip bind routine takes over its role.

vhci, bug fix for isochronous transfer

vhci, let a webcam with IAD be detected as COMPOSITE

A device with IAD(such as MS LifeCam) can be detected correctly by
replying USB/COMPOSITE as a compatible ID. But it's still not
working.(Camera app generates an error.)

Code beautify progressed
- "SerialNo" and "addr" are integrated into "port"
- Introduce wudev(windows specific structure for usbip userspace udev)

vhci, fix urb selection error

Old vhci does not seem to handle a sort of USB camera.
When MS lifecam studio had been tested, usb configuration selection
failed. This was due to that the number of interface information in
_URB_SELECT_CONFIGURATION does not match with the number in
configuration descriptor.

Remove garbage files