Added SDL_SetSurfaceScaleMode() and SDL_GetSurfaceScaleMode() to control scale mode using SDL_BlitSurfaceScaled()

src/dynapi/SDL_dynapi.sym

@@ -963,6 +963,8 @@ SDL3_0.0.0 {
     SDL_strnstr;
     SDL_wcsnstr;
     SDL_SyncWindow;
+    SDL_SetSurfaceScaleMode;
+    SDL_GetSurfaceScaleMode;
     # extra symbols go here (don't modify this line)
   local: *;
 };

src/dynapi/SDL_dynapi_overrides.h

@@ -988,3 +988,5 @@
 #define SDL_strnstr SDL_strnstr_REAL
 #define SDL_wcsnstr SDL_wcsnstr_REAL
 #define SDL_SyncWindow SDL_SyncWindow_REAL
+#define SDL_SetSurfaceScaleMode SDL_SetSurfaceScaleMode_REAL
+#define SDL_GetSurfaceScaleMode SDL_GetSurfaceScaleMode_REAL

src/dynapi/SDL_dynapi_procs.h

@@ -1013,3 +1013,5 @@ SDL_DYNAPI_PROC(const char*,SDL_GetTouchDeviceName,(SDL_TouchID a),(a),return)
 SDL_DYNAPI_PROC(char*,SDL_strnstr,(const char *a, const char *b, size_t c),(a,b,c),return)
 SDL_DYNAPI_PROC(wchar_t*,SDL_wcsnstr,(const wchar_t *a, const wchar_t *b, size_t c),(a,b,c),return)
 SDL_DYNAPI_PROC(int,SDL_SyncWindow,(SDL_Window *a),(a),return)
+SDL_DYNAPI_PROC(int,SDL_SetSurfaceScaleMode,(SDL_Surface *a, SDL_ScaleMode b),(a,b),return)
+SDL_DYNAPI_PROC(int,SDL_GetSurfaceScaleMode,(SDL_Surface *a, SDL_ScaleMode *b),(a,b),return)