[metacity] bump version to 3.23.90, update NEWS

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 34ba9c96a1cae7c68613af4d08ee6345e2ecd6ef
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Thu Feb 16 15:32:59 2017 +0200

    bump version to 3.23.90, update NEWS

 NEWS         |   12 ++++++++++++
 configure.ac |    2 +-
 2 files changed, 13 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 5378e71..6649dfa 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,15 @@
+Version 3.23.90
+===============
+- Fix tooltip style (Alberts Muktupāvels; #772984)
+- Fix crash in meta_group_new (Alberts Muktupāvels; LP:#1638153)
+- Fix window stacking order in compositor (Alberts Muktupāvels; LP:#1614050)
+- Ignore deprecation warnings (Alberts Muktupāvels)
+- Updated translations:
+  Ask Hjorth Larsen (da), Daniel Mustieles (es), Enrico Nicoletto (pt_BR),
+  Gianvito Cavasoli (it), Josef Andersson (sv), Marek Černocký (cs),
+  Mario Blättermann (de), Piotr Drąg (pl), Theppitak Karoonboonyanan (th),
+  Tiago Santos (pt).
+
 Version 3.22.0
 ==============
 - Use shadow from GTK+ theme (Alberts Muktupāvels)
diff --git a/configure.ac b/configure.ac
index 7ead049..b3ef7b6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@ dnl **************************************************************************
 
 m4_define([m_major_version], [3])
 m4_define([m_minor_version], [23])
-m4_define([m_micro_version], [0])
+m4_define([m_micro_version], [90])
 m4_define([m_version], [m_major_version.m_minor_version.m_micro_version])
 
 dnl **************************************************************************