Merge from develop into master

update java document for subscription

Td 1111 feature

TD-1047 iconv compile options

Merge from develop to master

fix td-1150

move macro definition position for random test.

update doc: add jdbc example for data subscribe

TD-1147

TD-1057 not show error if create file failed

 update  influxdbTestWriteLoop.sh

udpate taos sql md

Feature/os

Feature/query

Bugfix/td-1142

Update connector-ch.md

change format

in singe table subscription, after consume all data, the next call to consume crash both client and server.

this commit fix the issue.