shell32/tests: Add traces to the WaitForInputIdle() hooking process.

[Henri Verbeet]

On 29 January 2016 at 00:54, Francois Gouget <fgouget at codeweavers.com> wrote:
> * There is a set of traces showing WaitForInputIdle() being
>   replaced with our own implementation:
>   shlexec.c:2318: Hooked USER32.dll.WaitForInputIdle
>
> * And then traces showing our implementation being called:
>   shlexec.c:2258: WaitForInputIdle() waiting for dde event
>
> Except that on Windows 10 we never get the second set of traces which
> means we failed to override WaitForInputIdle().
>
I'm hardly an expert on shell32, but any chance the hooking worked
fine and WaitForInputIdle() is just not getting called? Would
explicitly specifying SEE_MASK_WAITFORINPUTIDLE make it any better?