Add Commit() method and commit/rollback behavior. bugid: 671
Add Commit() method and commit/rollback behavior.
bugid: 671


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