codetools: clean up

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41100 4005530d-fff6-0310-9dd1-cebe43e6787f
codetools: linkscanner: store directive levels

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41101 4005530d-fff6-0310-9dd1-cebe43e6787f