that should fix the build on freebsd-6

Reported by:	pointyhat (via kris)

security/oidentd/files/patch-configure

@@ -1,5 +1,5 @@
 --- configure.orig	Fri Jul 11 17:50:57 2003
-+++ configure	Mon Jul 14 17:32:58 2003
++++ configure	Sat Aug 21 20:41:25 2004
 @@ -3597,7 +3597,7 @@
  
  echo "$as_me:$LINENO: checking for egrep" >&5
@@ -31,3 +31,21 @@
  #include <netinet/ip_nat.h>
  _ACEOF
  rm -f conftest.$ac_objext
+@@ -5888,7 +5896,7 @@
+ 
+ 		if test "$masq_support" = "no"; then
+ 			case "$host_os" in
+-				*freebsd[45]* )
++				*freebsd[456]* )
+ 					use_kmem=no
+ 					os_src=freebsd4.c
+ 				;;
+@@ -5900,7 +5908,7 @@
+ 			esac
+ 		else
+ 			case "$host_os" in
+-				*freebsd5* )
++				*freebsd[56]* )
+ 					use_kmem=yes
+ 					os_src=freebsd5.c
+ 				;;