Add a file for error CS0030

svn path=/trunk/mcs/; revision=1089

mcs/errors/cs0030.cs

@@ -0,0 +1,15 @@
+// cs0030.cs : Cannot convert type 'Blah' to 'float'
+// Line : 12
+
+public class Blah {
+
+	public static int Main ()
+	{
+		Blah k;
+		
+		k = new Blah ();
+		
+		float f = (float) k;
+		
+	}
+}