remove fix priority inversion bug of mutex
* 2020-10-11 Meco Man add value overflow-check code
* 2021-01-03 Meco Man implement rt_mb_urgent()
* 2021-05-30 Meco Man implement rt_mutex_trytake()
- * 2021-01-20 hupu fix priority inversion bug of mutex
*/
#include <rtthread.h>
