Update for Ch 4 revisions - including using IsSubClassOf instead of custom function, and removal of the static vars for type checking.
Update for Ch 4 revisions - including using IsSubClassOf instead of custom function, and removal of the static vars for type checking.


rockfordlhotka/csla,MarimerLLC/csla,jonnybee/csla,JasonBock/csla,ronnymgm/csla-light,rockfordlhotka/csla,BrettJaner/csla,BrettJaner/csla,ronnymgm/csla-light,jonnybee/csla,MarimerLLC/csla,JasonBock/csla,BrettJaner/csla,MarimerLLC/csla,rockfordlhotka/csla,jonnybee/csla,ronnymgm/csla-light,JasonBock/csla