* SerializationCodeGenerator.cs: Added support for generation of readers

	* SerializationCodeGenerator.cs: Added support for generation of readers
	  and writers for several maps in a single class. Added support for
	  XmlMemberMapping. Fixed generation of serializers that use encoded format.
	* SoapAttributeAttribute.cs, SoapAttributeOverrides.cs, SoapAttributes.cs,
	  SoapElementAttribute.cs, SoapEnumAttribute.cs, SoapTypeAttribute.cs,
	  XmlAnyElementAttribute.cs, XmlAnyElementAttributes.cs, XmlArrayAttribute.cs,
	  XmlArrayItemAttribute.cs, XmlArrayItemAttributes.cs, XmlAttributeAttribute.cs,
	  XmlAttributeOverrides.cs, XmlChoiceIdentifierAttribute.cs, XmlRootAttribute.cs,
	  XmlElementAttribute.cs, XmlElementAttributes.cs, XmlEnumAttribute.cs,
	  XmlReflectionMember.cs, XmlTextAttribute.cs, XmlTypeAttribute.cs:
	  Added InternalEquals method.
	* XmlAttributes.cs: Removed a lot of unused code. Added InternalEquals method.
	* SoapReflectionImporter.cs: Set SerializationSource to generated maps.
	* XmlCustomFormatter.cs: Fixed little bug.
	* XmlMapping.cs: Added Source property. This a global identifier of the map.
	* XmlReflectionImporter.cs: Set SerializationSource to generated maps.
	* XmlSchemaImporter.cs: Set the correct value for IsNillable when importing
	  mapping members.
	* XmlSerializationReaderInterpreter.cs, XmlSerializationWriter.cs: Minor fixes.
	* XmlSerializationWriterInterpreter.cs: WriteObject and WriteEnum were not
	  correctly used.
	* XmlSerializer.cs: Added support for generation of serializers.

svn path=/trunk/mcs/; revision=23392