make sure we have access to HAVE_* defines to include header files:

run.c: In function ‘sigint’:
run.c:51:2: warning: implicit declaration of function ‘readline’
run.c:51:8: warning: cast to pointer from integer of different size

--- a/run.c
+++ b/run.c
@@ -7,6 +7,7 @@
 /**********************************/
 
 
+#include "config.h"
 
 #include <stdio.h>
 #include <stdlib.h>