Add errc(3) family.
This adds errc(3), verrc(3), warnc(3), and vwarnc(3).
vwarn(3) now calls vwarnc(3) with code=errno
.
Fixes #580 (closed).
This adds errc(3), verrc(3), warnc(3), and vwarnc(3).
vwarn(3) now calls vwarnc(3) with code=errno
.
Fixes #580 (closed).