[PATCH stable] doc: clarify license footers

[Adrian Buehlmann]

# HG changeset patch
# User Adrian Buehlmann <adrian at cadifra.com>
# Date 1254390053 -7200
# Node ID db500fc0095ba8ffaab01f1943c67b43dd866ba5
# Parent  e2fd9b62349b40a82218d030a4761ccdfac60412
doc: clarify license footers

Mercurial is licensed under version 2 of the GPL

diff --git a/doc/hg.1.txt b/doc/hg.1.txt
--- a/doc/hg.1.txt
+++ b/doc/hg.1.txt
@@ -95,6 +95,6 @@ COPYING
 -------
 Copyright \(C) 2005-2009 Matt Mackall.
 Free use of this software is granted under the terms of the GNU General
-Public License (GPL).
+Public License version 2.
 
 .. include:: common.txt
diff --git a/doc/hgignore.5.txt b/doc/hgignore.5.txt
--- a/doc/hgignore.5.txt
+++ b/doc/hgignore.5.txt
@@ -106,6 +106,6 @@ COPYING
 This manual page is copyright 2006 Vadim Gelfer.
 Mercurial is copyright 2005-2009 Matt Mackall.
 Free use of this software is granted under the terms of the GNU General
-Public License (GPL).
+Public License version 2.
 
 .. include:: common.txt
diff --git a/doc/hgrc.5.txt b/doc/hgrc.5.txt
--- a/doc/hgrc.5.txt
+++ b/doc/hgrc.5.txt
@@ -946,6 +946,6 @@ COPYING
 This manual page is copyright 2005 Bryan O'Sullivan.
 Mercurial is copyright 2005-2009 Matt Mackall.
 Free use of this software is granted under the terms of the GNU General
-Public License (GPL).
+Public License version 2.
 
 .. include:: common.txt