* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid
[] = "@(#)strcatn.c 4.3 (Berkeley) %G%";
#endif LIBC_SCCS and not lint
* Concatenate s2 on the end of s1. S1's space must be large enough.
* At most n characters are moved.