With this patch, Wine will no longer ensure that Wine Gecko is available
during prefix creation and update. We have shared Gecko installations
and good support for installing Gecko on demand now.

To ensure that Gecko is installed, one may use DllInstall with something
like |regsvr32 -i mshtml|.
Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>