wrong rate limiter queue. [RT #40350]

4180.	[bug]		Error responses in pipelined queries could
			cause a crash in client.c. [RT #40289]

                        [RT #40333]

- error if "configure --with-libxml2" but the library isn't available
- log a warning on startup if only JSON or only XML can be served

4152.   [func]          Implement DNS COOKIE option.  This replaces the
                        experimental SIT option of BIND 9.10.  The following
                        named.conf directives are available: send-cookie,
                        cookie-secret, cookie-algorithm, nocookie-udp-size
                        and require-server-cookie.  The following dig options
                        are available: +[no]cookie[=value] and +[no]badcookie.
                        [RT #39928]

4174.	[bug]		"dnssec-coverage -r" didn't handle time unit
			suffixes correctly. [RT #38444]

                        key. [RT #40188]

                        [RT #40265]

4171.	[bug]		Fixed incorrect class checks in TSIG RR
			implementation. [RT #40287]

4170.	[security]	An incorrect boundary check in the OPENPGPKEY
			rdatatype could trigger an assertion failure.
			[RT #40286]