Improve implementation of LS.getclass and LS.classname, make it more consistent.

luprex/cpp/core/source.hpp

@@ -15,15 +15,13 @@
 // a table and stores it in the global environment. The new table is meant to be
 // used as a class.  Three fields are initially created:
 //
-//    __class --> the name of the class as a string
-//
 //    __index --> points back to the class.  Makes it convenient to use the
 //                class as a metatable.
 //
 //    action  --> a subtable of additional methods.
 //
 // If you invoke 'makeclass' on a class that already exists, the existing table
-// is "repaired" - the __class and __index fields are restored and the action
+// is "repaired" -  __index field is restored and the action
 // subtable, if not present, is recreated.  If there are already functions or
 // constants inside the class, they are not affected.
 //