Checkpoint: Towards the next release

Added missing information regarding many class instance architectures
(which are set a priori by the run time system).

Removed unused class variable of Object (DependentsFields).

Added formal declaration of class Dictionary (which is defined a priori
by the run time system.)

Fixed bug that caused the system primitives of False to be placed into
the folder of class UndefinedObject (which overwrote the correct file.)