Manual testing shows that the backward compatible compilation is used
in d3dx9 versions below 37.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48302Signed-off-by: Paul Gofman <gofmanp@gmail.com>
Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>