This implements a new function for approximate
computation of the most frequent entries using
Filtered Space Saving with a merge step adapted
from Parallel Space Saving paper.

It works better for cases where GROUP BY x
is impractical due to high cardinality of x,
such as top IP addresses or top search queries.

the last stable version 1.7.8 fixes build with
newer OpenSSL that’s in most of the distribution

* Add small .sh for easier report while investigating problem

* renamed:    clickhouse_report.sh -> report/clickhouse_report.sh

* fix new path

* Merge: fail if cant convert columns

* Merge: convert all different types, more tests

* clean

* clean

* clean

* Server: Special mode with empty listen_host : try listen v4 and v6 without fatal error if protocol not supported (for docker and freebsd)

* fix build on freebsd/macos

* Requested change

* Update Server.cpp

* Update Server.cpp

* Fix deadlock when queue_log queue is full

* Add log error on query log fail

* Fix incudes, move code from daemon/OwnPatternFormatter.h

* Update SystemLog.h

* Update SystemLog.h

* Auto version update to [54230]

* Catch only "Protocol not supported" listen error

* Update Server.cpp