* Build fixes

*            fix

* Fix

* fix

* Fix install(export..

* Freebsd fixes

* Freebsd fixes

* Fix warning

* fix

* More PRIVATE linking

* Fix review

* Timmy

* fix

* fix

docs(currentUser): fix description

Add missing linking with PocoXML for clickhouse_common_io

A quick fix to resolve crash in LIVE VIEW table and re-enabling all LIVE VIEW tests.

* Re-enabling all LIVE VIEW tests

Minor doc fixes. Non-significant.

Otherwise unbundled build fail with:
  FAILED: dbms/libclickhouse_common_iod.so
  ...
  ../dbms/src/IO/WriteBufferFromS3.cpp:143: error: undefined reference to 'Poco::XML::InputSource::InputSource(std::istream&)'
  ../dbms/src/IO/WriteBufferFromS3.cpp:144: error: undefined reference to 'Poco::XML::DOMParser::DOMParser(Poco::XML::NamePool*)'
  ../dbms/src/IO/WriteBufferFromS3.cpp:145: error: undefined reference to 'Poco::XML::DOMParser::parse(Poco::XML::InputSource*)'
  ../dbms/src/IO/WriteBufferFromS3.cpp:146: error: undefined reference to 'Poco::XML::Document::getElementsByTagName(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const'
  ../dbms/src/IO/WriteBufferFromS3.cpp:144: error: undefined reference to 'Poco::XML::DOMParser::~DOMParser()'
  ../dbms/src/IO/WriteBufferFromS3.cpp:143: error: undefined reference to 'Poco::XML::InputSource::~InputSource()'
  ../dbms/src/IO/WriteBufferFromS3.cpp:144: error: undefined reference to 'Poco::XML::DOMParser::~DOMParser()'
  ../dbms/src/IO/WriteBufferFromS3.cpp:143: error: undefined reference to 'Poco::XML::InputSource::~InputSource()'
  collect2: error: ld returned 1 exit status

Update CHANGELOG

Made bloom_filter type of index supporting arrays

Fix PR template

Merging Values with expressions

Fix bug with segmentation fault in ATTACH PART query

Preparation of ExternalLoader for Dictionaries DDL

Fix typo in russian enum documentation

Fix some MemorySanitizer warnings for Fields.

Fixed time calculation in `MergeTreeData`.

* Disable some contribs for cross-compilation
* Fix clang-8-darwin build
* Also fix docs
* Add diagnostics
* Check cross-compilation in each file individually.
* Disable warning for clang < 9

Refactoring: remove copy-paste

When a Field is inserted into a column, its type should be the same as
the column data type to avoid implicit reinterpret_cast. Change a
couple of usages where these types were different.