lqb/rt-thread: RT-Thread诞生于2006年，是一款以开源、中立、社区化发展起来的物联网操作系统。RT-Thread主要采用 C 语言编写，浅显易懂，且具有方便移植的特性（可快速移植到多种主流 MCU 及模组芯片上）。RT-Thread把面向对象的设计方法应用到实时系统设计中，使得代码风格优雅、架构清晰、系统模块化并且可裁剪性非常好。RT-Thread有完整版和Nano版，对于资源受限的微控制器（MCU）系统，可通过简单? @ fae0fa8eea4c0e797940bf1eddc8ee6c1711734a

Bernard Xiong b7a71b8552 Merge pull request #4371 from mysterywolf/fixold		5 gadi atpakaļ
..
sys	598aa86f75 move clock_time_to_tick to time.c	5 gadi atpakaļ
SConscript	e927a53b41 精简exit abort system函数	5 gadi atpakaļ
readme.md	bf7a3af6fd update readme	5 gadi atpakaļ
stdlib.c	2b98ac215a [kernel] rearrange rt_thread_control() - schedule the thread when close it	5 gadi atpakaļ
termios.h	54143409ca 增加#include <rtconfig.h> 防止开启termios功能后报错	5 gadi atpakaļ
time.c	598aa86f75 move clock_time_to_tick to time.c	5 gadi atpakaļ
unistd.c	19c8cab8bd update	5 gadi atpakaļ

Attentions

This folder is "common" for armlibc newlibc and dlib.
If you want to add new .c files, please do not forget to fix SConscript file too. eg:
```
if GetDepend('RT_USING_POSIX') == False:
    SrcRemove(src, ['unistd.c'])
```