Liteos 下兼容pthread_create的修改线程栈空间大小的接口

		pthread_attr_t threadattr;
	    pthread_attr_init(&threadattr);
		pthread_attr_setdetachstate(&threadattr, PTHREAD_CREATE_DETACHED);
	    pthread_attr_setstacksize(&threadattr, 0x20000);

		pthread_t pThread;
	    int s32Ret = pthread_create(&pThread, &threadattr, scene_auto_main, NULL);
	    if (0 != s32Ret)
	    {
	        printf("%s: create scene_auto_main failed!, error: %d, %s\r\n", __FUNCTION__, s32Ret, strerror(s32Ret));
	        return -1;
	    }
		printf("start scene_auto_main(TID = %ld) OK!\n",pThread);