add blank line after copyright notices and after header

contrib/hg-ssh

@@ -1,6 +1,7 b''
 #!/usr/bin/env python
 #
 # Copyright 2005-2007 by Intevation GmbH <[e-mail]>
+#
 # Author(s):
 # Thomas Arendsen Hein <[e-mail]>
 #

hgext/children.py

@@ -1,6 +1,7 b''
 # Mercurial extension to provide the 'hg children' command
 #
 # Copyright 2007 by Intevation GmbH <[e-mail]>
+#
 # Author(s):
 # Thomas Arendsen Hein <[e-mail]>
 #

hgext/churn.py

@@ -5,6 +5,7 b''
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
+
 '''command to show certain statistics about revision history'''
 
 from mercurial.i18n import _

hgext/convert/__init__.py

@@ -4,6 +4,7 b''
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
+
 '''converting foreign VCS repositories to Mercurial'''
 
 import convcmd

hgext/fetch.py

@@ -4,6 +4,7 b''
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
+
 '''pulling, updating and merging in one command'''
 
 from mercurial.i18n import _

hgext/graphlog.py

@@ -4,6 +4,7 b''
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
+
 '''show revision graphs in terminal windows
 
 This extension adds a --graph option to the incoming, outgoing and log

hgext/hgk.py

@@ -4,6 +4,7 b''
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
+
 '''browsing the repository in a graphical way
 
 The hgk extension allows browsing the history of a repository in a

hgext/parentrevspec.py

@@ -4,6 +4,7 b''
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
+
 '''\
 use suffixes to refer to ancestor revisions
 

hgext/win32mbcs.py

@@ -8,6 +8,7 b''
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
 #
+
 """allow to use MBCS path with problematic encoding.
 
 Some MBCS encodings are not good for some path operations (i.e.

mercurial/hbisect.py

@@ -2,6 +2,7 b''
 #
 # Copyright 2007 Matt Mackall
 # Copyright 2005, 2006 Benoit Boissinot <[e-mail]>
+#
 # Inspired by git bisect, extension skeleton taken from mq.py.
 #
 # This software may be used and distributed according to the terms of the