LCL: TCustomListView: implemented SelectAll & ClearSelection for delphi compatibility. issue #19812


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43244 4005530d-fff6-0310-9dd1-cebe43e6787f
LCL: TCustomListView: added TCustomListView.AddItem for delphi compatibility. issue #25092


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43245 4005530d-fff6-0310-9dd1-cebe43e6787f