add string.h, fix up rcsid.

usr.bin/ipcs/ipcs.c

@@ -1,3 +1,5 @@
+/*	$NetBSD: ipcs.c,v 1.8 1994/12/24 16:46:18 cgd Exp $	*/
+
 /*
  * Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo@sigmasoft.com>
  * All rights reserved.
@@ -23,12 +25,11 @@
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *	$Id: ipcs.c,v 1.7 1994/09/05 00:28:59 mycroft Exp $
  */
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <paths.h>