[libsigc++2] Update NEWS for libsigc++ 2.2.4 release

[Daniel Elstner <daniel src gnome org>]

commit 0e8b37da9e442a4d81a0efc084063cd5895e8d3b
Author: Daniel Elstner <danielk openismus com>
Date:   Tue Aug 25 16:28:43 2009 +0200

    Update NEWS for libsigc++ 2.2.4 release

 ChangeLog |    4 ++++
 NEWS      |    8 ++++++++
 2 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 2640789..dac56b7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2009-08-25  Daniel Elstner  <danielk openismus com>
 
+	Update NEWS for libsigc++ 2.2.4 release
+
+2009-08-25  Daniel Elstner  <danielk openismus com>
+
 	Bump version to 2.2.4 and require mm-common 0.6.1
 
 	* configure.ac (AC_INIT): Increase version number to 2.2.4.
diff --git a/NEWS b/NEWS
index 1a5d99f..e3f5742 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,11 @@
+2.2.4 (stable):
+
+* New build system based on mm-common. The mm-common module is now
+  required for building from the git repository, but not for builds
+  of release archives. (Daniel Elstner)
+* The public reference documentation is now hosted on library.gnome.org.
+  (Frederic Peters, Daniel Elstner)
+
 2.2.3 (stable):
 
 * Windows: