cody: lvlgraph.clear

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40345 4005530d-fff6-0310-9dd1-cebe43e6787f
codetools: TStringMap.GetNodeData

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40346 4005530d-fff6-0310-9dd1-cebe43e6787f