Updated query classes in order to support prepared statements - added support for parameter binding. Added unit tests for mssql select using new prepared statement syntax.

git-svn-id: http://xe-core.googlecode.com/svn/branches/1.5.0-DB@8511 201d5d3c-b55e-5fd7-737f-ddc643e51545

classes/xml/xmlquery/argument/Argument.class.php

@@ -14,6 +14,10 @@
 			$this->isValid = true;
 		}
 		
+		function getName(){
+			return $this->name;
+		}
+		
 		function getValue(){
 			if(is_array($this->value)) return implode(',', $this->value);
 			return $this->value;