aarre: help if no directory is given

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41694 4005530d-fff6-0310-9dd1-cebe43e6787f
aarre: auto fix non UTF-8

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41695 4005530d-fff6-0310-9dd1-cebe43e6787f