Delay input name evaluation in judge definition.

Assets/Cryville/Crtr/Judge.cs

@@ -49,7 +49,8 @@ namespace Cryville.Crtr {
 	}
 	public class JudgeDefinition {
 		public PdtExpression clip;
-		public Identifier input;
+		public PdtExpression input;
+		public Identifier InputName;
 		public PdtExpression hit;
 		public Identifier[] pass;
 		public Identifier miss;