cdeeed7a38
- Consistently use err/errx/warnx throughout, rather than using perror() and exit(). - Teach the tests how to better manage (and therefore test) privilege: in particular, how to create sockes with root credentials but exercise the privileges with non-root credentials, etc. - Teach the test suite to apply each of the non-IP_HDRINCL options across each of SOCK_DGRAM, SOCK_STREAM, and SOCK_RAW.