Enable ClsCompliance for SWF ref binary (#55)

Author: AdamYoblick

src/System.Windows.Forms/ref/Properties/AssemblyInfo.cs

@@ -5,4 +5,4 @@
 
 // This attribute is needed by VS at design-time when enabling the Multilingual App Toolkit
 // to localize a project.  Additional assembly attributes are generated by a tool at build-time.
-[assembly: System.CLSCompliant(false)]
+[assembly: System.CLSCompliant(true)]