* Changed memory semantics of internal queries to fix bugs.
* Restarting a TCP-using query doesn't abort.
* Only accept a reply from the subset of servers we sent the query.
+ * Regression tests compile on systems without poll(2).
+ * Do not install adnstest_s.
+ * Ignore CNAME(s) in answer after RR(s) (and test).
+ * <adns.h> includes <sys/types.h>, <sys/time.h>, <unistd.h>.
+ * _submit returns ENOSYS, not adns_s_unknownquery; documented, tested.
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