Change coding name. Emacs does not support the name 'utf8'. Use 'utf-8'.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27942 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/PropertySheet/BPMPreference.py

-# -*- coding: utf8 -*-
+# -*- coding: utf-8 -*-
 #############################################################################
 #
 # Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.

product/ERP5/PropertySheet/Chain.py

 ##############################################################################
-# -*- coding: utf8 -*-
+# -*- coding: utf-8 -*-
 # Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.
 #                    Łukasz Nowak <luke@nexedi.com>
 #

product/ERP5/PropertySheet/TradeModelLine.py

-# -*- coding: utf8 -*-
+# -*- coding: utf-8 -*-
 ##############################################################################
 #
 # Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.