#KJ-55 Local classes - transform them into inner classes. Refactoring: added the function localClassGetAccessibleOuterEnv() that will compute just the accessible outer local environment - the subset of outer vars for which we need to add fields to the class. No implementation changes yet. Point 5  in the plan.
#KJ-55 Local classes - transform them into inner classes. Split the module PROCESS-LOCAL-CLASSES into two modules: one for local classes and one for anonymous.
cleanup: cosmetic changes. An unused function added.