* [TD-3973]<feature>: add jemalloc as submodule.

* [TD-3973]<feature>: add jemalloc as submodule.

* [TD-3973]<feature>: use jemalloc.

build works as following instructions:

cmake .. -DJEMALLOC_ENABLED=true

make

* fix jemalloc at tag 5.2.1

* fix conflicts

* make install works.

* fix conflicts.

* release script works.

* fix typo

* [TD-3937]<feature>: support jemalloc

add install funtion to all scripts.

* adjust install_jemalloc() position for check compatibility.

* fix position bug.

* add ldconfig for jemalloc library cache refresh.

* cherry pick from develop branch.

* cherry pick from develop branch.

* fix install_jemalloc() in install_client.sh.

* fix makeclient.sh.

* fix install script typo mistake.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

revert sani

[td-5600]<fix>: fix fill caused client crashed in join query.

[TD-5536]update  local jenkins

tsim/nchar-binary: fix negative length crash

[TD-5574]<hotfix>: fix change KV row value coredump

[TD-5356]<enhance>: default numOfMnodes to 1 instead of 3

[TD-5558]<fix>: fix invalid read memory issue

Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

* slove conflict

* [TD-5506]<fix>: throw SQLException in HttpClientPoolUtil

[TD-5512]<fix>: fix arbitrator offline caused by vnode destroying

* [TD-4068]<feature>: taosdemo support stmt.

for easy merge purpose. disabled in master.

* fix clang compile error.

* fix memory leak, add more macros. change sqlcount to int

* fix rest segfault.

* add stmt_errstr() for reason print.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

* [TD-3197]<fix>: taosdemo and taosdump coverity scan issues.

* exit if read sample file failed.

* fix converity scan issue.

* fix coverity scan issue.

* fix coverity scan memory leak.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

* [TD-5479]<fix>: taosdump -S -E does not work.

* taosdemo support timestamp step from command line.

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

* merge jdbc update on develop into master

* remove useless test cases

* change

* change

* remove uneccesary test case

* change

[TD-5431]<fix>:taken into accout data length when compare nchar bytes

[TD-5338]<test>:test stable interval function

* [TD-5479]<fix>: taosdump -S -E does not work.

* taosdemo support timestamp step from command line.

release/ver-2.0.20.10

sync from develop branch.

* copy from develop branch. stmt: 0, nanosec: 0

* set thread name disabled on master branch.

Dkj master pull request to fix metrict_del.sim