Update some copyrights.

* cygtls.cc (_cygtls::call): Invoke new exception protection here.
(_cygtls::init_thread): Remove conditionalized exception handler setup.
(exception_list): Delete declaration.
(_cygtls::init_exception_handler): Delete obsolete function.
* cygtls.h: Remove (now) unneeded include.
(_cygtls): Make this a real C++ class.
(_cygtls::handle_exceptions): Remove.
(_cygtls::init_exception_handler): Remove.
(_cygtls::call2): Make private.
(myfault::faulted): Remove unneeded parentheses.
* dcrt0.cc (dll_crt0_1): Remove exception handler setup.
* dlfcn.cc (dlopen): Ditto.
(dlclose): Ditto.
* dll_init.cc (dll_dllcrt0_1): Ditto.
(dll_list::detach): Use new exception handler protection.
* exceptions.cc (dump_exception): Rename to prevent confusion with new class.
(exception::handle): Rename from _cygtls::handle_exceptions.  Accommodate new
exception class.  Accommodate rename to dump_exception.
* tlsoffsets.h: Regenerate.

winsup/cygwin/exception.h

@@ -0,0 +1,38 @@
+/* exception.h
+
+   Copyright 2003, 2004, 2005, 2008, 2009 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
+
+#include <exceptions.h>
+
+extern exception_list *_except_list asm ("%fs:0");
+
+class exception
+{
+  exception_list el;
+  exception_list *save;
+  static int handle (EXCEPTION_RECORD *, exception_list *, CONTEXT *, void *);
+public:
+#ifdef DEBUG_EXCEPTION
+  exception ();
+  ~exception ();
+#else
+  exception () __attribute__ ((always_inline))
+  {
+    save = _except_list;
+    el.handler = handle;
+    el.prev = _except_list;
+    _except_list = &el;
+  };
+  ~exception () __attribute__ ((always_inline)) { _except_list = save; }
+#endif
+};
+
+#endif /*_CYGTLS_H*/ /*gentls_offsets*/
+