Fix BibleWorks 10 not displaying toolbar.

Pager always wants Unicode notifications from its children.
And the parent of pager may want ANSI notifications. In this
case, pager need to convert Unicode notifications to ANSI ones
before sending them to parent and convert ANSI notifications
from parent to Unicode before returning the result to its children.
Signed-off-by: Zhiyi Zhang <zzhang@codeweavers.com>
Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>