<sys/param.h> is a superset of <sys/types.h> and must always come
first.  Coincidentally, today is the 11th anniversary of this man
page's (and this bug's) first appearance in FreeBSD.

MFC after:	3 days


git-svn-id: svn+ssh://svn.freebsd.org/base/head@273924 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f