2004-04-24 Atsushi Enomoto <atsushi@ximian.com>

2004-04-24  Atsushi Enomoto <atsushi@ximian.com>

	W3C DOM compliant read-only check support (buggy part in MS.NET).
	* XmlAttribute.cs,
	  XmlCDataSection.cs,
	  XmlCharacterData.cs,
	  XmlDocument.cs,
	  XmlElement.cs,
	  XmlNode.cs,
	  XmlSignificantWhitespace.cs,
	  XmlText.cs
	  : CloneNode() - set read-only when copied node is read-only.
	    Check IsReadOnly on attempt to modify value.
	* XmlEntity.cs,
	  XmlEntityReference.cs : Set descendant nodes read-only.
	* XmlAttributeCollection.cs,
	  XmlNode.cs
	  : Fixed incompatible exception type.
	* XmlEntityReference.cs : CloneNode() should not pass an empty string
	  as its name.
	* XmlEntityReference.cs,
	  XmlProcessingInstruction.cs : Check XML name validity.
	* XmlText.cs : CloneNode() does not have to check children.

svn path=/trunk/mcs/; revision=25938