* Don't complain so much about poll(2) tests if not available.
* Do not give -u 0 -g 0 options to install.
* Do not scramble innards when a query on the output queue is cancelled.
+ * Promise not to change fds in adns_beforepoll (if now is specified).
+ * Correct error messages for qname CNAME foo, foo CNAME bar.
+ * Improved textual error string for _s_prohibitedcname.
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