merge from 2.0

tests/nettest/TCPUDP.sh

-#!/bin/bash
-
-for N in -1 0 1 10000 10001
-do
-	for l in 1023 1024 1073741824 1073741825 
-	do
-		for S in udp tcp 
-		do
-			taos -n speed -h BCC-2 -P 6030 -N $N -l $l -S $S 2>&1 | tee -a result.txt
-		done
-	done
-done