Re-sort synopsis, add includes.

share/man/man9/PCBGROUP.9

@@ -26,13 +26,18 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd July 18, 2014
+.Dd July 23, 2014
 .Dt PCBGROUP 9
 .Os
 .Sh NAME
 .Nm PCBGROUP
 .Nd Distributed Protocol Control Block Groups
 .Sh SYNOPSIS
+.Cd "options PCBGROUP"
+.Pp
+.In sys/param.h
+.In netinet/in.h
+.In netinet/in_pcb.h
 .Ft void
 .Fo in_pcbgroup_init
 .Fa "struct inpcbinfo *pcbinfo" "u_int hashfields" "int hash_nelements"
@@ -53,12 +58,11 @@
 .Fn in_pcbgroup_remove "struct inpcb *inp"
 .Ft int
 .Fn in_pcbgroup_enabled "struct inpcbinfo *pcbinfo"
+.In netinet6/in6_pcb.h
 .Ft struct inpcbgroup *
 .Fo in6_pcbgroup_byhash
 .Fa "struct inpcbinfo *pcbinfo" "u_int hashtype" "uint32_t hash"
 .Fc
-.Pp
-.Cd "options PCBGROUP"
 .Sh DESCRIPTION
 PCBGROUP, or "connection groups", are based on Willman, Rixner, and Cox's
 2006 USENIX paper,