include sys/resource.h where needed

We use functions from sys/resource.h in misc applets, but don't include
the header.  This breaks building with newer glibc versions, so add the
include where needed.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

networking/inetd.c

@@ -165,6 +165,7 @@
 //usage:     "\n		(default: 0 - disabled)"
 
 #include <syslog.h>
+#include <sys/resource.h> /* setrlimit */
 #include <sys/socket.h> /* un.h may need this */
 #include <sys/un.h>