Completed mongo serializer with support for variants, custom classes and unidimensional variant arrays
Fixed NativeUInt in Delphi 2007 to be a Cardinal. There's a known bug with Delphi 2007 where NativeInt is considered an Int64, which is wrong
Added explicity support for UTF8String to be able to use uncide with Delphi 2007
Added cleaner support for UTF8 for Delphi 2007
Made UTF8 tests compatible between Delphi XE and Delphi 2007
Completed deserializer
Added tests for deserializer