CodeSnip Old Code (SVN)

* Added new FmGenericModalDlg unit containing TGenericModalDlg class. This class is new base class for all modal dialogue boxes and descends from TGenericDlg.
* Changed all existing modal dialogue box classes that descended from TGenericDlg to descend from TGenericModalDlg instead.
* Removed code specific to modal dialogue boxes from TGenericDlg into TGenericModalDlg, making TGenericDlg suitable as a base class for both modal and non-modal dialogue boxes.
* Made protected sections in some classes strict.