st/nine: Change a few advertised caps

Most hw on the native platform advertise these
caps this way.

D3DCAPS_READ_SCANLINE: We don't really have hardware
support for that, but many games don't even check the
flag, and expect GetRasterStatus to work, which is
why we emulated it with a timer (like wine). So we
may as well advertise the cap.
D3DCURSORCAPS_LOWRES: I don't know what is the status
of this on X11, but I don't know of any dx9 game
running at height < 400 either.
D3DPTEXTURECAPS_TEXREPEATNOTSCALEDBYSIZE: The cap should
correspond to what the current generation of hw is doing.

Signed-off-by: Axel Davy <davyaxel0@gmail.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

include/D3D9/d3d9caps.h

@@ -26,6 +26,9 @@
 #include "d3d9types.h"
 
 /* Caps flags */
+#define D3DCAPS_OVERLAY       0x00000800
+#define D3DCAPS_READ_SCANLINE 0x00020000
+
 #define D3DCAPS2_FULLSCREENGAMMA   0x00020000
 #define D3DCAPS2_CANCALIBRATEGAMMA 0x00100000
 #define D3DCAPS2_RESERVED          0x02000000