Don't disable the screen saver by default for windows applications

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403490

src/SDL_compat.c

@@ -377,7 +377,7 @@ ClearVideoSurface()
 }
 
 static void
-SetupScreenSaver()
+SetupScreenSaver(int flags)
 {
     const char *env;
     SDL_bool allow_screensaver;
@@ -386,8 +386,10 @@ SetupScreenSaver()
     env = SDL_getenv("SDL_VIDEO_ALLOW_SCREENSAVER");
     if (env) {
         allow_screensaver = SDL_atoi(env) ? SDL_TRUE : SDL_FALSE;
-	} else {
+    } else if (flags & SDL_FULLSCREEN) {
         allow_screensaver = SDL_FALSE;
+    } else {
+        allow_screensaver = SDL_TRUE;
     }
     if (allow_screensaver) {
         SDL_EnableScreenSaver();
@@ -700,7 +702,7 @@ SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags)
 
     ClearVideoSurface();
 
-    SetupScreenSaver();
+    SetupScreenSaver(flags);
 
     /* We're finally done! */
     return SDL_PublicSurface;