Fix a shameless bug in graphviz contrib.

graphviz/graphviz.patch

@@ -0,0 +1,11 @@
+--- contrib/prune/prune.c.orig	Mon Aug  5 12:54:43 2002
++++ contrib/prune/prune.c	Mon Aug  5 12:54:46 2002
+@@ -25,7 +25,7 @@
+ #ifdef HAVE_GETOPT_H
+ #include <getopt.h>
+ #else
+-#include "compat_getopt_h"
++#include "compat_getopt.h"
+ #endif
+ 
+ #include <agraph.h>