This patch fixes the code so that it compiles with g++-3.4
ChangeLog entry:

    * src/Global.h: Include stddef.h so that NULL is always
      defined, making the code g++-3.4 compatible
        

Index: Global.h
===================================================================
RCS file: /cvsroot/uisp/uisp/src/Global.h,v
retrieving revision 1.1
diff -u -r1.1 Global.h
--- Global.h	25 May 2002 17:59:46 -0000	1.1
+++ Global.h	11 Oct 2004 17:52:07 -0000
@@ -29,6 +29,7 @@
 #define __GLOBAL
 
 #include <assert.h>
+#include <stddef.h>
 
 typedef unsigned char TByte;
 typedef unsigned TAddr;