FrameTools: Use the correct window handle for resizing the window

We want to resize the OpenGL window, not the frame window.
Fix L and R triggers with tas input.

Partially copied from revision 1be844406c02, but allows < fully pressed, and without the typo.
Forgot this from the last commit.
Adds Support for multiple GameCube Controllers

Conflicts:

	Source/Core/DolphinWX/Src/Frame.cpp
Clean up code for multiple GameCube Controllers

Conflicts:

	Source/Core/DolphinWX/Src/Frame.cpp
	Source/Core/DolphinWX/Src/FrameTools.cpp
Tas input works with bongos too.
Merge branch 'multi-tas-input'