RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ 1426e57db023b2fd40887c278d4c089678987d4e

armink 75e0ec124f [components][time] Revert the old code.		4 gadi atpakaļ
..
nogcc	b51602b1db [update] Add a blank line at the end	4 gadi atpakaļ
sys	71f48266ff [libc][time] 修复数据类型报警	4 gadi atpakaļ
SConscript	56e3571e8a implement delay.c/.h	4 gadi atpakaļ
delay.c	56e3571e8a implement delay.c/.h	4 gadi atpakaļ
delay.h	56e3571e8a implement delay.c/.h	4 gadi atpakaļ
dirent.h	dd9db58a86 优化dfs.h和dirent.h的包含关系	4 gadi atpakaļ
fcntl.h	d60c968902 [libc] 优化fcntl.h定义	4 gadi atpakaļ
poll.h	c360688714 使用poll.h代替dfs_poll.h	4 gadi atpakaļ
readme.md	f9ba41f4c2 更改libc目录为common 以及 none-gcc	4 gadi atpakaļ
stdlib.c	c80688126a [libc] 优化system 支持gcc	4 gadi atpakaļ
termios.h	3c05a4e719 [compoenets] auto & manual formatted	4 gadi atpakaļ
time.c	75e0ec124f [components][time] Revert the old code.	4 gadi atpakaļ
unistd.c	6697fa0ff5 [sleep] 加入调度器尚未运行时的延时情况	4 gadi atpakaļ

Attentions

This folder is "common" for all toolchains.
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'])
```