wined3d: Make RTL_READTEX the default rendertarget locking method.

For most cards this should make more sense than RTL_READDRAW, even if e.g.
surface_upload_data() has some room for improvement.

dlls/wined3d/surface.c

@@ -1518,7 +1518,6 @@ static HRESULT WINAPI IWineD3DSurfaceImpl_UnlockRect(IWineD3DSurface *iface) {
                 IWineD3DSurface_LoadLocation(iface, SFLAG_INTEXTURE, NULL /* partial texture loading not supported yet */);
                 /* drop through */
 
-            case RTL_AUTO:
             case RTL_READDRAW:
                 IWineD3DSurface_LoadLocation(iface, SFLAG_INDRAWABLE, fullsurface ? NULL : &This->dirtyRect);
                 break;

dlls/wined3d/wined3d_main.c

@@ -41,7 +41,7 @@ wined3d_settings_t wined3d_settings =
     PS_HW,          /* Hardware by default */
     TRUE,           /* Use of GLSL enabled by default */
     ORM_FBO,        /* Use FBOs to do offscreen rendering */
-    RTL_AUTO,       /* Automatically determine best locking method */
+    RTL_READTEX,    /* Default render target locking method */
     PCI_VENDOR_NONE,/* PCI Vendor ID */
     PCI_DEVICE_NONE,/* PCI Device ID */
     0,              /* The default of memory is set in FillGLCaps */

dlls/wined3d/wined3d_private.h

@@ -267,7 +267,6 @@ static inline float float_24_to_32(DWORD in)
 #define SHADER_NONE 4
 
 #define RTL_DISABLE   -1
-#define RTL_AUTO       0
 #define RTL_READDRAW   1
 #define RTL_READTEX    2