+5677. [func] Only accept FORMERR without a OPT record as an
+ indication that the server does net support EDNS.
+ This will break communication with servers that
+ don't understand EDNS and incorrectly echo back
+ the request message with the rcode field set to
+ FORMERR and the QR bit set to 1. [GL #2249]
+
5676. [func] Memory allocation has been substantially refactored,
and is now based on the memory allocation API
provided by 'libjemalloc'. This is now a build