btw, solve two taosdemo test cases too.

Feature/query

fix cmake scripts and reduce compile warnings

[TD-4986]<fix>:fix core when no ts column returned from subquery

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

* add macro definitions in cmake.

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

build works as following instructions:

cmake .. -DJEMALLOC_ENABLED=true

make

* fix jemalloc at tag 5.2.1

* link jemalloc works.

* make install works.

* support jemalloc in release.sh.

* release script works.

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

fix jenkins err

Feature/query

Add init/cleaup to waltest to make it work

fix retention policy error

* [TD-4987]<fix>: issues memory sanitizier detected.

* fix mask width issue.

[TD-4953]<fix>: fixed a crash bug when run taos on Windows.

[TD-4972]<fix>:fix error about double precision conversion on ts expr value

Feature/query

[TD-4951]<test>: add test case

* Fix build failure on MacOS with apple m1 chip

* Fix build failure on MacOS with apple m1 chip

* [TD-4918]<fix>: taosdemo subscribe endAfterResume.

* fix heap use-after-free issue.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

Update Node.js connector version to v2.0.8

[TD-4928] <docs>: fix typo.

[TD-2639] <docs>: fix return type of "taos_errno".

fix retention case error

1. move gnu compile flags "-pipe -Wshadow" from root "CMakeLists.txt" to "cmake/define.inc"; and change compile flag "/O3" to "/O2", because "/O3" is not supported by MSVC.
2. fix compile warnings in "src/util/src/tbuffer.c", by using "union" to transform integer with float and double.
3. use "memcpy()" instead of directly type convert in "rc/util/src/tutil.c" to resolve memory alignment problem in ARM platform.
4. reduce other compile warnings.