[gtkmm] Add the 2.91.1.1 NEWS entry, done in a branch

[Murray Cumming <murrayc src gnome org>]

commit 3aa37c75dd073d550e924f416d8c0741485c65a9
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Oct 21 11:54:16 2010 +0200

    Add the 2.91.1.1 NEWS entry, done in a branch

 NEWS |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 4979a3a..3fcca62 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,9 @@
+2.91.1.1 (unstable):
+
+* Fix the build with GTK+ 2.91.1.
+  (Murray Cumming) Bug #632694 (David Ronis)
+* ComboBoxText: Add clear_items() and set_active_text().
+
 2.91.1 (unstable):
 
 * Remove ComboBoxEntry and ComboBoxEntryText.