2004-08-31 Atsushi Enomoto <atsushi@ximian.com>

2004-08-31  Atsushi Enomoto <atsushi@ximian.com>

	* XPath2Expression.cs :
	  Revised some parameters for XPathSequence classes ctor().
	  Don't require XPathSequence while they are not required.
	  AxisIterator need to accept only current node as its input.
	  Implemented node comparison operators.
	  Removed AxisStepExpr.ParentStep (in the future it might hold line
	  information).
	* XQueryParser.jay : changes wrt AxisStepExpr.ParentStep.
	* XPathSequence.cs, XQueryExpression.cs, XQueryFunction.cs :
	  Removed some extraneous code.
	  NodeIterator.ctor() now requires XPathNavigator and XQueryContext
	  instead of XPathSequence.
	  Added SelfIterator (derived from NodeIterator).

svn path=/trunk/mcs/; revision=33100