fix 'NSCursor' may not respond to operationNotAllowedCursor,dragCopyCursor

related commit: e4653eee

Change-Id: Iba30c90336bf08d15d5990d6e1380867eee3564e
Reviewed-on: https://gerrit.libreoffice.org/10013Tested-by: Norbert Thiebaud <nthiebaud@gmail.com>
Reviewed-by: Norbert Thiebaud <nthiebaud@gmail.com>

vcl/osx/DropTarget.cxx

@@ -264,9 +264,17 @@ NSDragOperation DropTarget::draggingUpdated(id sender)
     }
 
     if (dragOp == NSDragOperationNone)
+#if MAC_OS_X_VERSION_MAX_ALLOWED < 1060
+        SetThemeCursor(kThemeNotAllowedCursor);
+#else
         [[NSCursor operationNotAllowedCursor] set];
+#endif
     else if (dragOp == NSDragOperationCopy)
+#if MAC_OS_X_VERSION_MAX_ALLOWED < 1060
+        SetThemeCursor(kThemeCopyArrowCursor);
+#else
         [[NSCursor dragCopyCursor] set];
+#endif
     else
         [[NSCursor arrowCursor] set];