fixup! Pre-calculate IsClassProxy by PocoEntityTuplizer

Author: hazzik

src/NHibernate/Proxy/AbstractProxyFactory.cs

@@ -19,7 +19,7 @@ public abstract class AbstractProxyFactory: IProxyFactory
 		protected virtual MethodInfo SetIdentifierMethod { get; private set; }
 		protected virtual IAbstractComponentType ComponentIdType { get; private set; }
 		protected virtual bool OverridesEquals { get; set; }
-		protected internal bool IsClassProxy { get; set; }
+		protected internal bool IsClassProxy { get; internal set; }
 
 		public virtual void PostInstantiate(string entityName, System.Type persistentClass, ISet<System.Type> interfaces,
 																				MethodInfo getIdentifierMethod, MethodInfo setIdentifierMethod,