Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-341.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Runtime.InteropServices;
+ 
+class Test {
+	[DllImport (Libs.MyLib)]
+	private static extern void foo ();
+ 
+	public static void Main ()
+	{
+	}
+}
+ 
+class Libs : Bar {
+}
+
+class Bar : Foo {
+	internal const string MyLib = "SomeLibrary";
+}
+
+class Foo {
+}