* XmlSchemaImporter.cs: Implemented ImportTypeMapping and all needed parsing

	* XmlSchemaImporter.cs: Implemented ImportTypeMapping and all needed parsing
	  stuff.
	* SoapReflectionImporter.cs: Set the type namespace parameter when creating a map.
	* TypeData.cs: Added property that returns a TypeData that represents an array of
	  the given TypeData.
	* TypeTranslator.cs: Added GetArrayName() method.
	  Added TypeDatas for missing primitive types.
	* XmlCodeExporter.cs: Implemented ExportMembersMapping. Fixed generation of
	  XmlRootAttribute. Added the namespace to all attributes being generated.
	  Other fixes in the generation of code.
	* XmlReflectionImporter: store the namespace of the type in the maps.
	* XmlSchemaExporter.cs: Several fixes. Only set the "mixed" attribute if the
	  class can generate text. Do not export inherited attributes of a class.
	  Use the new root namespace stored in the map when generating the root element.
	* XmlSerializationWriter: Always write a prefix when writing a qname, even if the
	  namespace is the default namespace.
	* XmlSerializationWriterInterpreter.cs: fixed missing "else".
	* XmlTypeMapElementInfo.cs: In DataTypeNamespace property, return the type
	  namespace instead of the map namespace (which can be different if the type
	  has a XmlRoot element).
	* XmlTypeMapMember.cs: Set the default value of the DefaultValue property
	  to System.DBNull.Value.
	* XmlTypeMapMemberElement.cs: ElementInfo property: In the getter Create
	  the collection if it has not yet been created.
	* XmlTypeMapping.cs: Added property XmlTypeNamespace which stores the namespace
	  of the type. It may be different from the namespace of the map if the type
	  has a XmlRoot element. Also added IsSimpleType property.
	  In ClassMap, added AllMembers property.

svn path=/trunk/mcs/; revision=17075