user32/tests: Allow tracing in menu test

[Francois Gouget]

On Thu, 24 Sep 2015, André Hentschel wrote:
[...]
> The sense behind this patch is that I have a task from wineconf to send AJ
> a trace log of what happens before:
> Test failed: id 205: wID should be equal to hSubMenu
> on w2k8 systems.
> Strange enough is that I can't reproduce it by manually testbot runs anymore.

Sometimes a test does not fail when run on its own but does when 
run as part of WineTest because previous tests changed something. 
Typically they left a window open or something like it.

But if you managed to reproduce the issue by running the test on its own 
before it may be something else.

-- 
Francois Gouget <fgouget at free.fr>              http://fgouget.free.fr/
              All generalizations are false, including this one.
                                 -- Mark Twain