nsf_init -> gstnsf_init to prevent symbol conflict with security/nss

$OpenBSD: patch-gst_nsf_nsf_c,v 1.1 2008/11/27 12:34:01 ajacoutot Exp $
--- gst/nsf/nsf.c.orig	Thu Nov 27 13:08:14 2008
+++ gst/nsf/nsf.c	Thu Nov 27 13:08:46 2008
@@ -376,7 +376,7 @@ nes_shutdown (nsf_t * nsf)
 }
 
 int
-nsf_init (void)
+gstnsf_init (void)
 {
   nes6502_init ();
   return 0;
