Add Windows 8 to <supportedOS> section in application manifest.

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Search/SearchStrategyFactory.cs

@@ -12,7 +12,7 @@ namespace ICSharpCode.AvalonEdit.Search
 	/// <summary>
 	/// Provides factory methods for ISearchStrategies.
 	/// </summary>
-	public class SearchStrategyFactory
+	public static class SearchStrategyFactory
 	{
 		/// <summary>
 		/// Creates a default ISearchStrategy with the given parameters.

src/Main/SharpDevelop/app.manifest

@@ -26,10 +26,14 @@
 	
 	<compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
 		<application>
-			<!-- Windows Vista -->
-			<supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
+			<!-- Windows 8.1 -->
+			<supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
+			<!-- Windows 8 -->
+			<supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
 			<!-- Windows 7 -->
 			<supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
+			<!-- Windows Vista -->
+			<supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/> 
 		</application>
 	</compatibility>