IDE: replaced some MessageDlg with IDEMessageDialog

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41497 4005530d-fff6-0310-9dd1-cebe43e6787f
codetools: identifier completion: fixed checking for overloaded procs

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41498 4005530d-fff6-0310-9dd1-cebe43e6787f