Update changelog and refresh patches after 5.5.49 import

debian/changelog

+mariadb-5.5 (5.5.49-1ubuntu0.14.04.1) trusty-security; urgency=low
+
+  * SECURITY UPDATE: New upstream release 5.5.49
+    - CVE-2016-0647
+    - CVE-2016-0648
+    - CVE-2016-0666
+    - CVE-2016-0643
+  * After the release of 5.5.49 it was announced that 5.5.48 included fixes for
+    the following security vulnerabilities:
+    - CVE-2016-0640
+    - CVE-2016-0644
+    - CVE-2016-0646
+    - CVE-2016-0649
+    - CVE-2016-0650
+    - CVE-2016-0641
+  * Updated previous changelog entries to contain new CVE identifiers.
+
+ -- Otto Kekäläinen <otto@debian.org>  Fri, 22 Apr 2016 22:13:38 +0300
+
 mariadb-5.5 (5.5.47-1ubuntu0.14.04.1) trusty-security; urgency=low
 
   * SECURITY UPDATE: New upstream release 5.5.47
@@ -11,6 +30,8 @@ mariadb-5.5 (5.5.47-1ubuntu0.14.04.1) trusty-security; urgency=low
     - CVE-2016-0606
     - CVE-2016-0608
     - CVE-2016-0609
+    - CVE-2016-0642
+    - CVE-2016-0651
     - CVE-2016-2047
     - Adds the mariadb-slow.log into the logrotate file, as the file
       name mariadb-slow.log is the log name in the default config file.