c - implementation of system interfaces from POSIX.1

Age	Commit message (Expand)	Author
2020-08-16	consistently use <> for standardized headers	Jakob Kaivo
2020-08-13	add src/ to -I and exorcise ../ from #include	Jakob Kaivo
2020-08-12	remove all generated nonstd/ headers	Jakob Kaivo
2020-03-04	compile with c=AMD1 and POSIX.2	Jakob Kaivo
2020-03-04	eliminate nonstd/io.h	Jakob Kaivo
2019-02-25	fix warning from -Wall	Jakob Kaivo
2019-02-23	compile in current environment	Jakob Kaivo
2019-02-09	merge POSIX.2 identifiers	Jakob Kaivo