Emulator

What's the problem? Describe what went wrong in few words.
On Dolphin 4.0-2660 and above , my 360 controller using XBCD drivers is no longer detected under Dolphin. Because there's no buldbot build, I manually compiled and verified the problem. https://dolphin-emu.org/download/dev/d29e3331426823b0dcd49a7436a4a8a6bdf60dcf/

What did you expect to happen instead?
My 360 controller is detected properly.

What steps will reproduce the problem?

1. (Not sure if needed) Download and install XBCD driver.
2. Launch Dolphin.
3. (optional) Open the GCPad configuration.

Dolphin 3.5 and 3.5-367 are old versions of Dolphin that have
known issues and bugs, so don't report issues about them and test the
latest Dolphin version first.
Which versions of Dolphin did you test on?
4.0-2660, 4.0-2662, 4.0-2826

Does using an older version of Dolphin solve your issue? If yes, which
versions of Dolphin used to work?
4.0.2, 4.0-2651 work without issues.

What are your PC specifications? (including, but not limited to: Operating
System, CPU and GPU)
Windows 7 SP1 x64, Intel i5 3570K, Asus Nvidia GTX66(6)

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)
http://imagizer.imageshack.com/img538/2057/Sy1Xep.png