Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

mcs/tests/gtest-431-2-lib.cs

@@ -0,0 +1,17 @@
+// Compiler options: -t:library -noconfig -r:gtest-431-1-lib.dll
+
+using System;
+
+namespace Library {
+
+	public class Foo {
+	}
+
+	public static class Extensions {
+
+		public static void Bar (this Foo self)
+		{
+			Console.WriteLine ("Bar");
+		}
+	}
+}