* Reject TXT RRs with no strings.
* Do not scramble innards when a query on the output queue is cancelled.
* Correct error messages for qname CNAME foo, foo CNAME bar.
+ * Fixed typo in adns.h.
General improvements:
* Promise not to change fds in adns_beforepoll (if now is specified).
* Improved textual error string for _s_prohibitedcname.
+ * New comment in adns_processany and return 0 (not r which is 0).
Portability and build improvements:
* Give install the '-c' flag (otherwise some delete the original !).
* Do not remove top-level Makefile on `make clean'.
* Don't complain so much about poll(2) tests if not available.
* Do not give -u 0 -g 0 options to install.
+ * Remove trailing , from some enums in adns.h.
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