rsx: Promote FIFO optimizations outside of strict mode

- The benefits of FIFO optimizations are huge in some cases.
  The optimizations also do not break any tested applications so no need to disable with strict mode
- A debug option is provided to disable this behaviour for testing

rpcs3/Emu/RSX/RSXThread.cpp

@@ -717,7 +717,7 @@ namespace rsx
 				bool execute_method_call = true;
 
 				//TODO: Flatten draw calls when multidraw is not supported to simplify checking in the end() methods
-				if (supports_multidraw)
+				if (supports_multidraw && !g_cfg.video.disable_FIFO_reordering)
 				{
 					//TODO: Make this cleaner
 					bool flush_commands_flag = has_deferred_call;