DBG: refactor TGDBMIDebuggerProperties to have a none publishing base class

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40373 4005530d-fff6-0310-9dd1-cebe43e6787f
ValEdit: implelement OnGetPickList.


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40374 4005530d-fff6-0310-9dd1-cebe43e6787f