SB: implement ReadOnlyBase and ReadOnlyListBase serialiization using MobileFormatter.  Add unit tests for serialization for .NET and SilverLight.
SB: implement ReadOnlyBase and ReadOnlyListBase serialiization using MobileFormatter.  Add unit tests for serialization for .NET and SilverLight.

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