Attempt to quiet unavoidable compiler warnings on Mac OS X.

src/video/quartz/SDL_QuartzVideo.m

@@ -24,7 +24,6 @@
 #include "SDL_QuartzVideo.h"
 #include "SDL_QuartzWindow.h"
 
-
 #if __MAC_OS_X_VERSION_MIN_REQUIRED < 1060  /* Fixed in Snow Leopard */
 /*
     Add methods to get at private members of NSScreen. 
@@ -116,6 +115,16 @@ static int          QZ_SetColors        (_THIS, int first_color,
 #define MAC_OS_X_VERSION_MIN_REQUIRED 1050
 #endif
 
+/* Disable compiler warnings we can't avoid. */
+#if (defined(__GNUC__) && (__GNUC__ >= 4))
+#  if (MAC_OS_X_VERSION_MIN_REQUIRED < 1060)
+     /* use ==, not >=, so we see future warnings. */
+#    if (MAC_OS_X_VERSION_MAX_ALLOWED == 1070) 
+#      pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#    endif
+#  endif
+#endif
+
 static inline BOOL IS_LION_OR_LATER(_THIS)
 {
 #if FORCE_OLD_API