build-sys: release++ (v2.31)

Signed-off-by: Karel Zak <kzak@redhat.com>
diff --git a/NEWS b/NEWS
index 5cdb5b2..ef9d131 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,7 @@
+util-linux 2.31: Oct 19 2017
+* see Documentation/releases/v2.31-ReleaseNotes or the complete changelog at
+  https://www.kernel.org/pub/linux/utils/util-linux/v2.31/v2.31-ChangeLog
+
 util-linux 2.31-rc2: Oct 03 2017
 * see Documentation/releases/v2.31-ReleaseNotes or the complete changelog at
   https://www.kernel.org/pub/linux/utils/util-linux/v2.31/v2.31-rc2-ChangeLog
diff --git a/configure.ac b/configure.ac
index d81bfd3..1899ec3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -28,7 +28,7 @@
 
 dnl libblkid version
 LIBBLKID_VERSION="$PACKAGE_VERSION_MAJOR.$PACKAGE_VERSION_MINOR.$PACKAGE_VERSION_RELEASE"
-LIBBLKID_DATE="03-Oct-2017"
+LIBBLKID_DATE="19-Oct-2017"
 LIBBLKID_LT_MAJOR=1
 LIBBLKID_LT_MINOR=1
 LIBBLKID_LT_MICRO=0