Commit of missing files.

git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@1691 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4

GreenshotInterop/Interop/Base.cs

@@ -0,0 +1,11 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Greenshot.Interop {
+	/// <summary>
+	/// Common properties that has appreared in almost all objects
+	/// </summary>
+	public interface Common : IDisposable {
+	}
+}