* java/io/ObjectStreamClass.java (lookup): Split method and call
	lookupForClassObject().
	(lookupForClassObject): New method.
	(isProxyClass): New field.
	(setClass): Set isProxyClass, add object to classLookupTable, set
	superClass and calculateOffsets.
	(ObjectStreamClass): Set isProxyClass. Only set uid when Serializable
	and not a proxy class.
	(setFields): Set accessible true for serialPersistentFields.
	(getClassUID): Same for suid. And check if suid is of type long.
	(hasClassInitializer): Don't throw NoSuchMethodError.

From-SVN: r60867