[metacity] bump version to 3.16.0, update NEWS

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 339f86b0314aec5bdc0b47f6c165211ae106e854
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Tue Apr 7 16:56:16 2015 +0300

    bump version to 3.16.0, update NEWS

 NEWS         |   22 ++++++++++++++++++++++
 configure.ac |    4 ++--
 2 files changed, 24 insertions(+), 2 deletions(-)
---
diff --git a/NEWS b/NEWS
index be7074b..4779e74 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,25 @@
+Version 3.16.0
+==============
+- Added Adwaita and HightContrast metacity themes as they were removed from
+  gnome-themes-standart. (Alberts Muktupāvels)
+- Metacity now use theme setting key from org.gnome.metacity schema not
+  org.gnome.desktop.wm.preferences. (Alberts Muktupāvels)
+- Added support for GTK+ theme. Set theme to empty sting to enable GTK+
+  theme. Almost everything here was adapted from mutter. (Mutter developers,
+  Alberts Muktupāvels)
+- Added support for invisible borders. Again most work are based on mutter.
+  (Mutter developers, Alberts Muktupāvels)
+- Added invisible_border to metacity theme. Default is 10px extra space
+  for resize cursor area. (Alberts Muktupāvels)
+- Added back window thumbnails in alt-tab window as optional option. Can be
+  enabled setting alt-tab-thumbnails to true under org.gnome.metacity.
+  (Alberts Muktupāvels)
+- Better support for _GTK_FRAME_EXTENTS. (Alberts Muktupāvels)
+- Updated translations:
+  Balázs Úr (hu), Cheng-Chia Tseng (zh_TW), Daniel Mustieles (es),
+  Marek Černocký (cs), Muhammet Kara (tr), Piotr Drąg (pl),
+  Rafael Ferreira (pt_BR), Samir Ribic  (bs), Yosef Or Boczko (he).
+
 Version 3.15.2
 ==============
 - Fix deprecated warnings. (Alberts Muktupāvels)
diff --git a/configure.ac b/configure.ac
index 9c73671..9db8758 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,8 @@
 AC_PREREQ(2.50)
 
 m4_define([metacity_major_version], [3])
-m4_define([metacity_minor_version], [15])
-m4_define([metacity_micro_version], [3])
+m4_define([metacity_minor_version], [16])
+m4_define([metacity_micro_version], [0])
 
 m4_define([metacity_version],
           [metacity_major_version.metacity_minor_version.metacity_micro_version])