leading to a REQUIRE failure. [RT #16688]

2156.   [bug]           Fix node reference leaks in lookup.c:lookup_find(),
                        resolver.c:validated() and resolver.c:cache_name().
                        Fix a memory leak in rbtdb.c:free_noqname().
                        Make lookup.c:lookup_find() robust against
                        event leaks. [RT #16685]

                        [RT #16694]

                        matched in acls by omitting the scope. [RT #16599]

                        dighost.c:get_trusted_key(). [RT #16678]

                        [RT #16679]

                        starting point for the first response for a given
                        RRset. [RT #16655]

                        if there were still active memory contexts.
                        [RT #16672]

                        hmac_link.c. [RT #16437]

                        SO_BSDCOMPAT" message. [RT #16641]

                        [RT #16622]

                        [RT #16619]

                        kernel failed to return the destination the
                        packet was sent to. [RT #16613]

                        matches the epoch. [RT# 16612]

                        equivalent of LDH checks).  [RT #16609]

                        failures. [RT #16654]