-[NSApplication sendEvent:] seems to consume the event and doesn't pass it along
to the window.

Mac keyboards haven't included a Help key for a long time, but users with PC
keyboards can use the Insert key, which is in the same position.  The Mac
driver translates either one to VK_INSERT.
Signed-off-by: Ken Thomases <ken@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>