Quiesce warnings by updating headerfile includes

svn path=/head/; revision=257398

contrib/tcp_wrappers/clean_exit.c

@@ -13,6 +13,7 @@ static char sccsid[] = "@(#) clean_exit.c 1.4 94/12/28 17:42:19";
 #endif
 
 #include <stdio.h>
+#include <unistd.h>
 
 extern void exit();
 

contrib/tcp_wrappers/hosts_access.c

@@ -44,6 +44,7 @@ static char sccsid[] = "@(#) hosts_access.c 1.21 97/02/12 02:13:22";
 #ifdef INET6
 #include <netdb.h>
 #endif
+#include <stdlib.h>
 
 extern char *fgets();
 extern int errno;

contrib/tcp_wrappers/options.c

@@ -50,6 +50,8 @@ static char sccsid[] = "@(#) options.c 1.17 96/02/11 17:01:31";
 #include <ctype.h>
 #include <setjmp.h>
 #include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
 
 #ifndef MAXPATHNAMELEN
 #define MAXPATHNAMELEN  BUFSIZ

contrib/tcp_wrappers/percent_x.c

@@ -19,6 +19,7 @@ static char sccsid[] = "@(#) percent_x.c 1.4 94/12/28 17:42:37";
 #include <stdio.h>
 #include <syslog.h>
 #include <string.h>
+#include <unistd.h>
 
 extern void exit();
 

contrib/tcp_wrappers/rfc931.c

@@ -25,6 +25,7 @@ static char sccsid[] = "@(#) rfc931.c 1.10 95/01/02 16:11:34";
 #include <setjmp.h>
 #include <signal.h>
 #include <string.h>
+#include <unistd.h>
 
 #ifndef SEEK_SET
 #define SEEK_SET 0

contrib/tcp_wrappers/shell_cmd.c

@@ -16,10 +16,13 @@ static char sccsid[] = "@(#) shell_cmd.c 1.5 94/12/28 17:42:44";
 
 #include <sys/types.h>
 #include <sys/param.h>
+#include <sys/wait.h>
 #include <signal.h>
 #include <stdio.h>
 #include <syslog.h>
 #include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
 
 extern void exit();
 

contrib/tcp_wrappers/update.c

@@ -24,6 +24,7 @@ static char sccsid[] = "@(#) update.c 1.1 94/12/28 17:42:56";
 #include <stdio.h>
 #include <syslog.h>
 #include <string.h>
+#include <unistd.h>
 
 /* Local stuff. */