VOP_PATHCONF(9) on FreeBSD

The text 37e3c50f54c3, as FreeBSD 5.5-RELEASE, FreeBSD 5.4-RELEASE, FreeBSD 5.3-RELEASE, FreeBSD 5.2.1-RELEASE, FreeBSD 5.2-RELEASE shipped it.

return POSIX pathconf information

VOP_PATHCONF(9) on FreeBSD now