RT-Thread/rt-thread: KM https://github.com/RT-Thread/rt-thread.git @ da1302cbda8607b1e7e4b3ead07ba515b5c878b9

guo 6f1a505cd2 Merge pull request #4801 from mysterywolf/delay2		4 rokov pred
..
none-gcc	5bb6e86cf5 [sys/errno.h] 修复armclang支持问题	4 rokov pred
sys	0e32728a5d [libc][rtlibc] remove libc_ioctl.h	5 rokov pred
SConscript	56e3571e8a implement delay.c/.h	4 rokov pred
delay.c	56e3571e8a implement delay.c/.h	4 rokov pred
delay.h	56e3571e8a implement delay.c/.h	4 rokov pred
dirent.h	f9ba41f4c2 更改libc目录为common 以及 none-gcc	5 rokov pred
readme.md	f9ba41f4c2 更改libc目录为common 以及 none-gcc	5 rokov pred
stdlib.c	3c05a4e719 [compoenets] auto & manual formatted	5 rokov pred
termios.h	3c05a4e719 [compoenets] auto & manual formatted	5 rokov pred
time.c	a5f7635f31 remove libc_errno.h & libc_limits.h	5 rokov pred
unistd.c	6697fa0ff5 [sleep] 加入调度器尚未运行时的延时情况	4 rokov pred

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'])
```