Add support for multiple batched presents on vulkan. Closes #2492

util/test/demos/linux/linux_window.cpp

@@ -55,6 +55,7 @@ Display *X11Window::GetDisplay()
 }
 
 X11Window::X11Window(int width, int height, int visualid_override, const char *title)
+    : GraphicsWindow(title)
 {
   uint32_t value_mask, value_list[32];