[gnome-desktop] Prepare release 3.31.2

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 3358b96447376392641998ac91027f590948f96f
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Wed Nov 14 19:40:41 2018 -0600

    Prepare release 3.31.2
    
    Also, update the totally-incorrect comment above the libversion string.
    Clearly this isn't libtool versioning as the numbers we use here will be
    literally used for the installed library.

 NEWS        |  6 ++++++
 meson.build | 18 ++++++++----------
 2 files changed, 14 insertions(+), 10 deletions(-)
---
diff --git a/NEWS b/NEWS
index 9c436923..6f2b6f78 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,9 @@
+==============
+Version 3.31.2
+==============
+
+- Translation updates
+
 ===============
 Version 3.31.1
 ===============
diff --git a/meson.build b/meson.build
index 2d62b2ef..fd6c3de6 100644
--- a/meson.build
+++ b/meson.build
@@ -1,19 +1,17 @@
 project('gnome-desktop', 'c',
   meson_version: '>= 0.47.0',
-  version: '3.31.1',
+  version: '3.31.2',
   license: ['GPL2+', 'LGPL2+']
 )
 
 # Before making a release, the libversion string should be modified.
-# The string follows the libtool versioning scheme, and it is of the
-# form `C.A.R`.
-# - If interfaces have been changed or added, but binary compatibility has
-#   been preserved, change to C+1.A+1.0
-# - If binary compatibility has been broken (eg removed or changed interfaces)
-#   change to C+1.0.0
-# - If the interface is the same as the previous version, change to C.A.R+1
-
-libversion = '17.0.2'
+#
+#  * Bump the first component if binary compatibility has been broken; or
+#  * Bump the second component if new APIs are added; or
+#  * Bump the third component otherwise.
+#
+# A lot easier than libtool, right?
+libversion = '17.0.3'
 soversion = libversion.split('.')[0]
 
 gdk_pixbuf_req = '>= 2.36.5'