Upgrade unbound library

These files were pulled from the 1.6.3 release tarball.

This new version builds against OpenSSL version 1.1 which will be
the default in the new Debian Stable which is due to be released
RealSoonNow (tm).

external/unbound/pythonmod/doc/modules/struct.rst

@@ -6,55 +6,94 @@ module_qstate
 
 .. class:: module_qstate
 
-   Module state, per query.
-   
-   This class provides these data attributes:
-   
-   .. attribute:: qinfo
-   
-      (:class:`query_info`) Informations about query being answered. Name, RR type, RR class.
-   
-   .. attribute:: query_flags
-   
-      (uint16) Flags for query. See QF_BIT\_ predefined constants.
-      
-   .. attribute:: is_priming
-   
-      If this is a (stub or root) priming query (with hints).
-   
-   .. attribute:: reply
-   
-      comm_reply contains server replies.
-      
-   .. attribute:: return_msg
-   
-      (:class:`dns_msg`) The reply message, with message for client and calling module (read-only attribute).
-		Note that if you want to create of modify return_msg you should use :class:`DNSMessage`.
-      
-   .. attribute:: return_rcode
-   
-      The rcode, in case of error, instead of a reply message. Determines whether the return_msg contains reply.
-   
-   .. attribute:: region
-   
-      Region for this query. Cleared when query process finishes.
-   
-   .. attribute:: curmod
-   
-      Which module is executing.
-      
-   .. attribute:: ext_state[]
-   
-      Module states.
-      
-   .. attribute:: env
-   
-      Environment for this query.
-      
-   .. attribute:: mesh_info
-   
-      Mesh related information for this query.
+    Module state, per query.
 
+    This class provides these data attributes:
+
+    .. attribute:: qinfo
+
+        (:class:`query_info`) Informations about query being answered. Name, RR type, RR class.
+
+    .. attribute:: query_flags
+
+        (uint16) Flags for query. See QF_BIT\_ predefined constants.
+
+    .. attribute:: is_priming
+
+        If this is a (stub or root) priming query (with hints).
+
+    .. attribute:: reply
+
+        comm_reply contains server replies.
+
+    .. attribute:: return_msg
+
+        (:class:`dns_msg`) The reply message, with message for client and calling module (read-only attribute).
+        Note that if you want to create of modify return_msg you should use :class:`DNSMessage`.
+
+    .. attribute:: return_rcode
+
+        The rcode, in case of error, instead of a reply message. Determines whether the return_msg contains reply.
+
+    .. attribute:: region
+
+        Region for this query. Cleared when query process finishes.
+
+    .. attribute:: curmod
+
+        Which module is executing.
+
+    .. attribute:: ext_state[]
+
+        Module states.
+
+    .. attribute:: env
+
+        Environment for this query.
+
+    .. attribute:: mesh_info
+
+        Mesh related information for this query.
+
+    .. attribute:: edns_opts_front_in
+
+        Incoming EDNS options from the front end.
+
+    .. attribute:: edns_opts_front_in_iter
+
+        Iterator for `edns_opts_front_in`.
+
+    .. attribute:: edns_opts_back_out
+
+        Outgoing EDNS options to the back end.
+
+    .. attribute:: edns_opts_back_out_iter
+
+        Iterator for `edns_opts_back_out`.
+
+    .. attribute:: edns_opts_back_in
+
+        Incoming EDNS options from the back end.
+
+    .. attribute:: edns_opts_back_in_iter
+
+        Iterator for `ends_opts_back_in`.
+
+    .. attribute:: edns_opts_front_out
+
+        Outgoing EDNS options to the front end.
+
+    .. attribute:: edns_opts_front_out_iter
+
+        Iterator for `edns_opts_front_out`.
+
+    .. attribute:: no_cache_lookup
+
+        Flag to indicate whether modules should answer from the cache.
+
+    .. attribute:: no_cache_store
+
+        Flag to indicate whether modules should store answer in the cache.
 
 query_info
 ----------------
@@ -94,7 +133,57 @@ query_info
    .. attribute:: qclass_str
    
       The ``qclass`` in display presentation format (string).
-   
+
+edns_data
+---------
+
+.. class:: edns_data
+
+    This class represents the EDNS information parsed/encoded from/to a packet. It provides these data attributes:
+
+    .. attribute:: edns_present
+
+        If EDNS OPT record is present.
+
+    .. attribute:: ext_rcode
+
+        Extended RCODE.
+
+    .. attribute:: edns_version
+
+        The EDNS version number.
+
+    .. attribute:: bits
+
+        The EDNS bits field from ttl (host order): Z.
+
+    .. attribute:: udp_size
+
+        UDP reassembly size.
+
+    .. attribute:: opt_list
+
+        The EDNS option list.
+
+    .. attribute:: opt_list_iter
+
+        Iterator for `opt_list`.
+
+edns_option
+-----------
+
+.. class:: edns_option
+
+    This class represents an EDNS option (code, data) found in EDNS option lists. It provides these data attributes:
+
+    .. attribute:: code
+
+    The EDNS option code.
+
+    .. attribute:: data
+
+    The EDNS option data.
+
 reply_info
 --------------------