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.

merge from master into develop

* fix crash if no result file.

* make taosdemo same as master branch.

* decrease few debug print level.

Feature/query

Docs/update latest feature

* [TD-4752]<doc>: python connector supports nanoseconds.

* update english document too.

Docs/update latest feature

[td-4927]<enhance>:ignore the rows of expired timestamp that are not dropped yet during query according to the TTL settings.

* fix warn mesage in jdbc

* change

* [TD-4876]<fix>: fix getNetworkTimeout and setNetworkTimeout in jdbc driver

* [TD-4117]<test>: remove System.out.println in all jdbc test cases

* change

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

[TD-4868]add taosdump test to full test

taosdemoCfg adding how to use and minor bug fix

[TD-4825]<feature> order by col after group-by

[TD-4926]<fix>:follow log format convention

[TD-4950]<fix>: fix undefined left bit shift

[TD-4910]fix double free issue

[TD-4915]<fix> fix show create database except

[td-4905]<fix>:fix import caused crash.

Docs/update latest feature