NEWS: version bump to 1.5.3

NEWS

+Knot DNS 1.5.3 (2014-09-15)
+==========================
+
+Bugfixes:
+---------
+ - Some specific incoming IXFRs were causing server to crash
+ - Rare sychronization error during reload caused read-after-free
+ - Response synthetization module did not work properly with DNSSEC-enabled zones
+
 Knot DNS 1.5.2 (2014-09-08)
 ==========================
 

configure.ac

 #                                               -*- Autoconf -*-
 
 AC_PREREQ([2.60])
-AC_INIT([knot], [1.5.2], [knot-dns@labs.nic.cz])
+AC_INIT([knot], [1.5.3], [knot-dns@labs.nic.cz])
 AM_INIT_AUTOMAKE([gnits subdir-objects dist-xz -Wall -Werror])
 AM_SILENT_RULES([yes])
 AC_CONFIG_SRCDIR([src/knot/main.c])