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ef8f4f53a2
Avoid potential name space collision for the global variables PC, SP and BC when readline is dynamically loaded. For some unknown reason, ncurses exports these internal variables which may be needed in the context of how ncurses is used by readline implementations. In any case, these variable names are common in simulators, so there is an undesired interaction between simulator internal variables and the simplest solution is to rename these simulator global variables where they exist. Another alternative is to merely declare these variables static when they happen to only be referenced in a single simulator source module.