calculate the memRowType precisely when NonVarType exists as to minimize the memory copy and to avoid of sorting for ordered input

* [TD-11063]<fix>: Support gcc4.4.

* [TS-615]<CI>add Ningsi OS

* make jenkins happy
Co-authored-by: Nliuyq-617 <yqliu@taosdata.com>

* [TS-498]<test>: add a test case for HttpClientPoolUtil

* [TS-498]<fix>: fixed 'no sql input' bug

* throw exception when httpEntity is null

* [TS-498]<fix>: change taosd keepAlive to 30s
Co-authored-by: Nxywang <xywang@taosdata.com>

add tsClientMerge option to enable or disable client merge row and fix server duplicate row merge bug in skiplist