Update to 9.6-ESV-R10

Security Fixes

   Prevents exploitation of a runtime_check which can crash named
   when satisfying a recursive query for particular malformed zones.
   (CVE-2013-3919) [RT #33690]

Feature Changes

   rndc status now also shows the build-id. [RT #20422]

   Improved OPT pseudo-record processing to make it easier to support
   new EDNS options. [RT #34414]

   "configure" now finishes by printing a summary of optional BIND
   features and whether they are active or inactive. ("configure
   --enable-full-report" increases the verbosity of the summary.)
   [RT #31777]

   Addressed compatibility issues with newer versions of Microsoft
   Visual Studio. [RT #33916]

   Improved the 'rndc' man page. [RT #33506]

   'named -g' now no longer works with an invalid logging configuration.
   [RT #33473]

   The default (and minimum) value for tcp-listen-queue is now 10
   instead of 3.  This is a subtle control setting (not applicable
   to all OS environments).  When there is a high rate of inbound
   TCP connections, it controls how many connections can be queued
   before they are accepted by named.  Once this limit is exceeded,
   new TCP connections will be rejected.  Note however that a value
   of 10 does not imply a strict limit of 10 queued TCP connections
   - the impact of changing this configuration setting will be
   OS-dependent.  Larger values for tcp-listen queue will permit
   more pending tcp connections, which may be needed where there
   is a high rate of TCP-based traffic (for example in a dynamic
   environment where there are frequent zone updates and transfers).
   For most production servers the new default value of 10 should
   be adequate.  [RT #33029]

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