Traverse ${DESTDIR}/usr/include in lexographical order.

This should fix problems reported recently on -current.

usr.bin/kdump/mkioctls

@@ -19,7 +19,7 @@ fi
 # XXX netipx conflicts with netns (leave out netns).
 ioctl_includes=`
 	cd $1
-	find * -name '*.h' -follow |
+	find -s * -name '*.h' -follow |
 		egrep -v '^(netns)/' |
 		xargs egrep -l \
 '^#[ 	]*define[ 	]+[A-Za-z_][A-Za-z0-9_]*[ 	]+_IO[^a-z0-9_]' |