Merge branch 'jsoneachrow_import_nested' of https://github.com/veloman-yunkan/ClickHouse into veloman-yunkan-jsoneachrow_import_nested

ISSUES-3149 fix incorrectly masks rows in views

ZooKeeper: retry with different node in case when ZK server closed connection in response for our handshake [#CLICKHOUSE-3987]

CLICKHOUSE-3993 add default type of JOIN in query

Functions toISOWeek, toISOYear, toStartOfISOYear, toDayOfYear.

Fix dependency on too new libc

This reverts commit 3e6d6bbb.

Miscellaneous (avoid valgrind's "Syscall param socketcall.sendto(msg) points to uninitialised byte(s)") [#CLICKHOUSE-3989]

Fixed tests in Travis (order of destruction of thread-local variables of the main thread vs. static variables) [#CLICKHOUSE-3989]

* WIp

* fix

* fix

* test

* fix poco netssl find

* clean

* fixes

* wip

* wip

* new poco

* fixes

* Fixes

* wip

*  clean

* clean

*     clean

* clean

* Update HTTPHandlerFactory.h

Merge pull request #3123 from Enmk/Issue_2093_Support_arbitrary_type_for_ranges_in_range_hashed_dictionary

Added support of int-based types: Int\UInt(8,16,32), Date, DateTime f…

[CLICKHOUSE-3476] add invalidate_query for ClickHouse in Dictionary

var, stddev and math functions for decimal [CLICKHOUSE-3765]