teach dnsdist about regex-drop, for smart packet filtering
silence timeout error from webserver
implement ComboAddress native statistics ringbuffer based on boost::circular_buffer
Can use speedup by moving d_rings to a boost::multi_index_container with char* based lookup.
make '50' limit for max queries per queries configurable
add 'address quenching' - any client IP that made is do too much work gets dropped for 60 seconds. Metrics in 'client-blocks'.
rejig priorities - if we have to drop a query, drop the *oldest one*, not the newest one.
for this branch
Merge branch 'prioq' of github.com:PowerDNS/pdns into prioq
implement client-blocktime configuration