Position helper functions (use in conjunction with the update&add functions)

Functions
XMLElementPosition	XMLNode::positionOfChildNode (XMLCSTR name, int i=0) const
	return the position of the ith childNode with the specified name if (name==NULL) return the position of the ith childNode

Detailed Description

These are some useful functions when you want to insert a childNode, a text or a XMLClearTag in the middle (at a specified position) of a XMLNode tree already constructed. The value returned by these methods is to be used as last parameter (parameter 'pos') of addChild, addText or addClear.