Removed Ignore attribute from WhitespaceTests so the tests in the class will be executed.

Made some modifications to XamlParser so it aligns with the official XamlReader and the WhitespaceTests will pass.

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Tests/XamlDom/WhitespaceTests.cs

@@ -7,7 +7,6 @@ using NUnit.Framework;
 namespace ICSharpCode.WpfDesign.Tests.XamlDom
 {
 	[TestFixture]
-	[Ignore("Broken on .NET 4")]
 	public class WhitespaceTests : TestHelper
 	{
 		[Test]

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.XamlDom/Project/XamlParser.cs

@@ -275,15 +275,6 @@ namespace ICSharpCode.WpfDesign.XamlDom
 			}
 			
 			foreach (XmlNode childNode in GetNormalizedChildNodes(element)) {
-				
-				// I don't know why the official XamlReader runs the property getter
-				// here, but let's try to imitate it as good as possible
-				if (defaultProperty != null && !defaultProperty.IsCollection) {
-					for (; combinedNormalizedChildNodes > 0; combinedNormalizedChildNodes--) {
-						defaultProperty.GetValue(obj.Instance);
-					}
-				}
-				
 				XmlElement childElement = childNode as XmlElement;
 				if (childElement != null) {
 					if (childElement.NamespaceURI == XamlConstants.XamlNamespace)
@@ -314,9 +305,7 @@ namespace ICSharpCode.WpfDesign.XamlDom
 				}
 			}
 		}
-		
-		int combinedNormalizedChildNodes;
-		
+
 		IEnumerable<XmlNode> GetNormalizedChildNodes(XmlElement element)
 		{
 			XmlNode node = element.FirstChild;
@@ -334,8 +323,6 @@ namespace ICSharpCode.WpfDesign.XamlDom
 					       && (node.NodeType == XmlNodeType.Text
 					           || node.NodeType == XmlNodeType.CDATA
 					           || node.NodeType == XmlNodeType.SignificantWhitespace)) {
-						combinedNormalizedChildNodes++;
-						
 						if (text != null) text.Value += node.Value;
 						else cData.Value += node.Value;
 						XmlNode nodeToDelete = node;