2005-09-20 Atsushi Enomoto <atsushi@ximian.com>

2005-09-20  Atsushi Enomoto <atsushi@ximian.com>

	* RelaxngValidatingReader.cs : added explicit error message for
	  attribute XmlReader validation (spec section 7.1.5 explicitly
	  prohibits start//attribute so such validation never happens).
	* RelaxngGrammar.cs : name class analysis is now done inside
	  CheckConstraints(), so nothing to add here.
	* RelaxngPattern.cs : (RdpUnresolvedRef) now GetLabels() could be
	  invoked here, so just ignore.

	* Util.cs : Added name class analysis support. The algorithm is at
	  http://www.thaiopensource.com/relaxng/nameclass.html .
	* RdpPattern.cs :
	  - added CheckNameOverlap() for group and interleave to do name class
	    analysis (spec 7.3 and 7.4).
	  - Removed CheckAttributeDuplicates(). Now name class analysis is
	    implemented in CheckNameOverlap().
	  - Added additional bool parameter to GetLabels() to collect
	    RdpNameClass instances instead of XmlQualifiedName instances.

svn path=/trunk/mcs/; revision=50312