[freebsd] Recognize FreeBSD 15.

Author: glebius

Configure

@@ -1084,6 +1084,11 @@ case $LSOF_TGT in	# {
 	LSOF_TSTBIGF=" "
 	LSOF_VERS=14000
 	;;
+      15*)
+	LSOF_CFGL="$LSOF_CFGL -lutil"
+	LSOF_TSTBIGF=" "
+	LSOF_VERS=15000
+	;;
       *)
 	echo Unknown FreeBSD release: `uname -r`
 	rm -f $LSOF_HLP