update to latest SWI.

os/pl-cstack.h

@@ -0,0 +1,34 @@
+/*  $Id$
+
+    Part of SWI-Prolog
+
+    Author:        Jan Wielemaker
+    E-mail:        J.Wielemaker@uva.nl
+    WWW:           http://www.swi-prolog.org
+    Copyright (C): 1985-2011, University of Amsterdam
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef PL_CSTACK_H_INCLUDED
+#define PL_CSTACK_H_INCLUDED
+
+COMMON(void)	save_backtrace(const char *why);
+COMMON(void)	btrace_destroy(struct btrace *bt);
+COMMON(void)	print_backtrace(int last);		/* 1..SAVE_TRACES */
+COMMON(void)	print_backtrace_named(const char *why);
+COMMON(void)	initBackTrace(void);
+
+#endif /*PL_CSTACK_H_INCLUDED*/