* fix few coverity scan issues.

* fix coverity scaned memory leak.

* [TD-10530]<fix>: taosdump infinite loop

query table des fail on normal table.
and value is NULL.

* fix binary string with quote symbol

* [TD-10530]<fix>: taosdump infinite loop

query table des fail on normal table.
and value is NULL.

* fix binary string with quote symbol

* [TD-7790]<fix>: taosdump stb dump memory leak.

* merge from develop branch.

* fix buffer overflow issue.

* [TD-7790]<fix>: taosdump stb dump memory leak.

* fix normal table belong stb be specified.

* merge avro feature code.

* merge avro feature code.

* fix buffer overflow issue.

* [TD-6280]<fix>: taosdump -P determine input.

* fix mistake range.

* [TD-6280]<fix>: taosdump -P determine input.

* fix mistake range.

* [TD-7790]<fix>: taosdump stb dump memory leak.

* fix normal table belong stb be specified.

* [TD-10416]<fix>: taosdump if no any arguments given.

* fix database specified scenario.

* [TD-10416]<fix>: taosdump if no any arguments given.

* cherry pick from develop branch.

* [TD-6479]<fix>: taosdump cmdline align for database sequence.

adopt 'taosdump -D db1,db2,...' format.

* fix core dump issue.

* refactor in progress

* heavily refactor in progress.

* change dumped filename back to thread index to avoid exceed file system limit.

* add taosdump verison in cmake

* add -V feature

* taosdump add -V/--version

* fix few coverity scan issues.

* submit empty for triage appveyor build

* [TD-6479]<fix>: taosdump cmdline align for database sequence.

adopt 'taosdump -D db1,db2,...' format.

* fix core dump issue.

* [TD-6479]<fix>: taosdump cmdline align for database sequence.

adopt 'taosdump -D db1,db2,...' format.

* fix core dump issue.

* cherry pick from develop branch.

* fix conflict and reformat by autopep8.

Co-authored-by: NMinglei Jin <mljin@taosdata.com>

* [TD-5844]<feature>: make cmd line parameter similar.

* fix test case align with taosdemo change.

* fix windows stack overflow issue.

* fix mac compile error.

* fix taosdemo cmdline parameter in tests/pytest/tools/taosdemoAllTest/NanoTestCase/taosdemoTestSupportNanoInsert.py

* make taos.exe use mysql style password input.

* make taos shell and taosdump use mysql style password input.

* determine scanf return value.

* cherry pick from develop/feature branch.

* cherry pick with ab6cde02

* cherry pick with d6bfe443

* fix password echo on darwin.

* fix few lines.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

* [TD-5844]<feature>: make cmd line parameter similar.

* fix test case align with taosdemo change.

* fix windows stack overflow issue.

* fix mac compile error.

* fix taosdemo cmdline parameter in tests/pytest/tools/taosdemoAllTest/NanoTestCase/taosdemoTestSupportNanoInsert.py

* fix windows compiler options.

* make taos.exe use mysql style password input.

* make taos shell and taosdump use mysql style password input.

* determine scanf return value.

* make console echo off during password input.

* use one macro to define password length.

* fix --password. change taos shell '-z' for timezone

* fix password echo on darwin.

* fix few lines.

* [TD-6294]<fix>: taosdemo support long arg

fix conflict with develop branch.

* fix few words.

* declare default child tables number.

* [TD-6294]<fix>: taosdemo support long arg

fix conflict with develop branch.

* fix few words.

* declare default child tables number.

* [TD-5844]<feature>: make cmd line parameter similar.

* fix test case align with taosdemo change.

* fix windows stack overflow issue.

* fix mac compile error.

* fix taosdemo cmdline parameter in tests/pytest/tools/taosdemoAllTest/NanoTestCase/taosdemoTestSupportNanoInsert.py

* make taos.exe use mysql style password input.

* make taos shell and taosdump use mysql style password input.

* determine scanf return value.

* cherry pick from develop/feature branch.

* cherry pick with ab6cde02

* cherry pick with d6bfe443Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

* [TD-5844]<feature>: make cmd line parameter similar.

* fix test case align with taosdemo change.

* fix windows stack overflow issue.

* fix mac compile error.

* fix taosdemo cmdline parameter in tests/pytest/tools/taosdemoAllTest/NanoTestCase/taosdemoTestSupportNanoInsert.py

* fix windows compiler options.

* make taos.exe use mysql style password input.

* make taos shell and taosdump use mysql style password input.

* determine scanf return value.

* make console echo off during password input.

* use one macro to define password length.

* fix --password. change taos shell '-z' for timezone

* [TD-5844]<feature>: make cmd line parameter similar.

* fix test case align with taosdemo change.

* fix windows stack overflow issue.

* fix mac compile error.

* fix taosdemo cmdline parameter in tests/pytest/tools/taosdemoAllTest/NanoTestCase/taosdemoTestSupportNanoInsert.py

* make taos.exe use mysql style password input.

* make taos shell and taosdump use mysql style password input.

* determine scanf return value.

* cherry pick from develop/feature branch.

* [TD-5844]<feature>: make cmd line parameter similar.

* fix test case align with taosdemo change.

* fix windows stack overflow issue.

* fix mac compile error.

* fix taosdemo cmdline parameter in tests/pytest/tools/taosdemoAllTest/NanoTestCase/taosdemoTestSupportNanoInsert.py

* fix windows compiler options.

* make taos.exe use mysql style password input.

* make taos shell and taosdump use mysql style password input.

* determine scanf return value.

* make console echo off during password input.

* [TD-5844]<feature>: make cmd line parameter similar.

* fix test case align with taosdemo change.

* fix windows stack overflow issue.

* fix mac compile error.

* fix taosdemo cmdline parameter in tests/pytest/tools/taosdemoAllTest/NanoTestCase/taosdemoTestSupportNanoInsert.py

* fix windows compiler options.

* make taos.exe use mysql style password input.

* make taos shell and taosdump use mysql style password input.

* determine scanf return value.