MFC r292530,r292546:

MFC r292530,r292546:

r292530:

- Use 1 for an exit code instead of -1 with err, errx, and exit
- Add unistd.h for getuid(3)
- Sort #includes

r292546:

- Convert testcase to TAP format
- Use nitems(x) instead of handrolled sizeof(x) / sizeof(*x) macro
- Do not mark count != 0 case with bsde_get_rule_count as a failure; this
  generates false positives on systems with ugidfw rules set on it

git-svn-id: svn://svn.freebsd.org/base/stable/10@293246 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f