* exception.h (stackdump): Declare.

* exceptions.cc (stackdump): Rework to perform all operations needed for a
stackdump and to avoid recursion.
(exception::handle): Use simplified stackdump interface.
* sigproc.cc (signal::exit): Ditto.  Delete now, uneeded declaration.

winsup/cygwin/exception.h

@@ -1,13 +1,12 @@
 /* exception.h
 
-   Copyright 2010, 2011 Red Hat, Inc.
+   Copyright 2010, 2011, 2012 Red Hat, Inc.
 
 This software is a copyrighted work licensed under the terms of the
 Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
 details. */
 
-#ifndef _EXCEPTION_H
-#define _EXCEPTION_H
+#pragma once
 
 #include <exceptions.h>
 
@@ -29,5 +28,10 @@ public:
   ~exception () __attribute__ ((always_inline)) { _except_list = save; }
 };
 
-#endif /*_EXCEPTION_H*/
+void stackdump (DWORD, CONTEXT * = NULL, EXCEPTION_RECORD * = NULL);
+extern void inline
+stackdump (DWORD n, bool)
+{
+  stackdump (n, (CONTEXT *) 1);
+}