[gtkmm-documentation/gtkmm-2-22] 2.21.8.1

[Murray Cumming <murrayc src gnome org>]

commit f49360c20d44e57e7386a65266e42d7eeb6d9b0c
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Sep 20 14:36:58 2010 +0200

    2.21.8.1

 NEWS         |   17 ++++++++++++++++-
 configure.ac |    4 ++--
 2 files changed, 18 insertions(+), 3 deletions(-)
---
diff --git a/NEWS b/NEWS
index 93b8e3e..61e07ee 100644
--- a/NEWS
+++ b/NEWS
@@ -1,8 +1,23 @@
+2.21.8.1:
+
+* Builds with the latest gtkmm-2.4 (2.21.8.1) release.
+  (Murray Cumming)
+* Improve the Assistant example.
+  (David King)
+* Buttons chapter: Remove text about non-existant XPMLabelBox class.
+  (Murray Cumming)
+* Recommend non-deprecated Tooltip API in Tooltips chapter.
+  (David King)
+* Remove the optional API appendix, because it is not supported in
+  recent gtkmm versions.
+* Remove use of reduced API.
+  (Murray Cumming
+
 2.20.1:
 
 * Multiple-Item Widgets chapter: Added Assistant sub-section.
   (David King, Openismus)
-  
+
 2.20.0:
 
 * Update the code to use only non-deprecated API.
diff --git a/configure.ac b/configure.ac
index 5bbf529..982d6ae 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 ## This file is part of gtkmm-documentation.
 
 AC_PREREQ([2.59])
-AC_INIT([gtkmm-documentation], [2.20.1],
+AC_INIT([gtkmm-documentation], [2.21.8.1],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=gtkmm],
         [gtkmm-documentation], [http://www.gtkmm.org/])
 
@@ -19,7 +19,7 @@ AC_PROG_CXX
 AC_PATH_PROG([PERL], [perl], [perl])
 
 PKG_CHECK_MODULES([GIOMM], [giomm-2.4 >= 2.24.0])
-PKG_CHECK_MODULES([GTKMM], [gtkmm-2.4 >= 2.20.0])
+PKG_CHECK_MODULES([GTKMM], [gtkmm-2.4 >= 2.21.8.1])
 MM_PKG_CONFIG_SUBST([GTHREAD_CFLAGS], [--cflags-only-other gthread-2.0])
 
 AC_LANG([C++])