Fixed SD2-784 - File still considered dirty after undoing all changes.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/3.0@3700 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/DisplayBindings/XmlEditor/Project/Src/XmlView.cs

@@ -545,6 +545,12 @@ namespace ICSharpCode.XmlEditor
 		public void Undo()
 		{
 			xmlEditor.Undo();
+			
+			/// If all undos are complete and the file is not untitled (i.e. was loaded from the file system) then
+			/// the file is not dirty.
+			if (PrimaryFile.IsDirty && !EnableUndo && !PrimaryFile.IsUntitled) {
+				PrimaryFile.IsDirty = false;
+			}		
 		}
 		
 		#endregion

src/Main/Base/Project/Src/TextEditor/Gui/Editor/TextEditorDisplayBinding.cs

@@ -147,6 +147,12 @@ namespace ICSharpCode.SharpDevelop.DefaultEditor.Gui.Editor
 		public void Undo()
 		{
 			this.textEditorControl.Undo();
+
+			/// If all undos are complete and the file is not untitled (i.e. was loaded from the file system) then
+			/// the file is not dirty.
+			if (PrimaryFile.IsDirty && !EnableUndo && !PrimaryFile.IsUntitled) {
+				PrimaryFile.IsDirty = false;
+			}
 		}
 		
 		public void Redo()