dbg: clean up

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42406 4005530d-fff6-0310-9dd1-cebe43e6787f
dbg: publish async mode flag

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42407 4005530d-fff6-0310-9dd1-cebe43e6787f