plug selected leaks resulting from ITS#4056 & ITS#4057 implementation; may need further cleanup and reworking to streamline a bit

the recent test010 failure!  hmmmm.....

Always mkdir $TESTDIR when making subdirs, and always use mkdir -p anyway.
Add or modify "test skipped" messages.
'exit 0' instead of 'exit'.

longer works well.

Add tests to confirm proper behavior