dns/adns: 1.4 -> 1.5.0~rc0
* Support for queries about IPv6 data in all applicable adns
query types (including AAAA, PTR, and adns_r_addr queries).
(Thanks very much to Mark Wooding.)
* Support for transport over IPv6. (Thanks to Mark Wooding again.)
* adns_addr2text and adns_text2addr: Convenient functions for
converting between addresses and address literals.
* Fix a crashing bug in adnslogres. (Debian#392102.)
* Do all checks of checked PTR owner name before actually sending the
query, and reject IPv4 PTR owner names whose labels have leading zero
digits or values >255.
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