Rationalised use of #includes to be more standards-compliant.

util/ego/ra/makeitems.c

@@ -3,6 +3,8 @@
  * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
  * See the copyright notice in the ACK home directory, in the file "Copyright".
  */
+ 
+#include <stdlib.h>
 #include <stdio.h>
 
 /*  MAKE ITEMS TABLE

util/ego/ra/ra.c

@@ -8,6 +8,7 @@
  *
  */
 
+#include <stdlib.h>
 #include <stdio.h>
 #include <em_reg.h>
 #include "../share/types.h"