App Nap defers timer firings and I/O if the app is not visibly or audibly
updating.  An app is supposed to disable it during user-requested or background
activity, but we can't know when the Windows app is engaged in such.  Since it's
not generally acceptable for timers or IO to be deferred, we have to disable it
at all times.

The user can re-enable it by setting the following registry setting:

[HKEY\Software\Wine\Mac Driver]
"EnableAppNap"="y"
Signed-off-by: Ken Thomases <ken@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>