TheGreatEscape.c, RoomDefs.h: Add constants for room object offsets.
TheGreatEscape.c: table_7738[] can become static to element_A_of_table_7738().
TheGreatEscape.c: inputroutines[] can become static to input_routine().
TheGreatEscape.c: input_device_select_keyscan(): Reduce.
TheGreatEscape.c: character_behaviour_stuff() comment out Z80 ops.
TheGreatEscape.c: Add a glossary to explain terms.
TheGreatEscape.c: twentyonelong[] can become static to in_permitted_area().
TheGreatEscape.c: Add a second entry point for in_permitted_area_end_bit() at $A10A.

This gets called from solitary().
TheGreatEscape.c: wave_morale_flag(): Rename pcounter to pgame_counter for clarity.