* SerializationCodeGenerator.cs, XmlSerializationReaderInterpreter.cs:

	* SerializationCodeGenerator.cs, XmlSerializationReaderInterpreter.cs:
	  When deserializing an encoded method response, if the return type of the
	  method is Object, assign to it the first element of the message, whatever
	  it is.
	* XmlSerializationReader.cs:
	* SoapReflectionImporter.cs, XmlReflectionImporter.cs: Set IsReturnValue of
	  the imported member.
	* TypeTranslator.cs: Added method to safely get a primitive TypeData.
	* XmlSerializationReader.cs: Don't throw an exception when the CLR type for
	  a given xsi type is not found. Just read it as primitive type.
	* XmlTypeMapMember.cs: Added IsReturnValue property.
	* XmlTypeMapping.cs: Added ReturnMember property.
	* XmlSerializer.cs: Reference System.Data when compiling the serializer.

svn path=/trunk/mcs/; revision=26836