- Include string.h to avoid compile warning about using bzero without

defining it
- use herror() rather than perror() to give useful error messages
  (the *hostby*() functions set h_errno not errno)

PR:		docs/126031
Submitted by:	gavin

en_US.ISO8859-1/books/developers-handbook/sockets/chapter.sgml

@@ -966,6 +966,7 @@ int connect(int s, const struct sockaddr *name, socklen_t namelen);
  * Programmed by G. Adam Stanislav
  */
 #include <stdio.h>
+#include <string.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
@@ -1181,6 +1182,7 @@ int accept(int s, struct sockaddr *addr, socklen_t *addrlen);
  * June 19, 2001
  */
 #include <stdio.h>
+#include <string.h>
 #include <time.h>
 #include <unistd.h>
 #include <sys/types.h>
@@ -1582,7 +1584,7 @@ int main(int argc, char *argv[]) {
   host = (argc > 1) ? (char *)argv[1] : "time.nist.gov";
 
   if ((he = gethostbyname(host)) == NULL) {
-    perror(host);
+    herror(host);
     return 2;
   }