lcl: gtk2: clean up

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@39946 4005530d-fff6-0310-9dd1-cebe43e6787f
codetools: debugging

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@39947 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: identifier completion: debugging

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@39948 4005530d-fff6-0310-9dd1-cebe43e6787f