fix failing JDBC tests with message 'The tag list was not created before assigning tags to changesets !'
(caused by recyclation of threads between tests from single thread pool
and hitting thread-local variable indicting that tagging is to be done)
replace condvar with CountDownLatch
fixes #754
lower ctags log message about extra options to INFO
Merge pull request #755 from vladak/countdownlatch

Countdownlatch