[master] Update changelog for merge of #963

ChangeLog

+413.	[func]		stephen, jelte
+	Created a new tool b10-dbutil, that can check and upgrade database
+	schemas, to be used when incompatible changes are introduced in the
+	backend database schema. Currently it only supports sqlite3 databases.
+	(Trac #963, git 49ba2cf8ac63246f389ab5e8ea3b3d081dba9adf)
+
 412.	[func]		jelte
 	Added a command-line option '--clear-config' to bind10, which causes
 	the system to create a backup of the existing configuration database