Make debugtools.h independent from config.h.

diff --git a/dlls/netapi32/netapi32.c b/dlls/netapi32/netapi32.c
index 0d74c1c..3357cda 100644
--- a/dlls/netapi32/netapi32.c
+++ b/dlls/netapi32/netapi32.c
@@ -2,6 +2,8 @@
  * Copyright 2001 Mike McCormack
  */
 
+#include "config.h"
+
 #include <string.h>
 #include <stdio.h>
 #include <fcntl.h>