The ru_local field of a CoreRule is False for implicit Ids
MERGE to 6.6.1 For class-ops, record selectors, data constructors, we want the ru_local field of the Rule to be False. We do not attach the rule to the binding for the Id, because there simply isn't a binding until the code gen stage. (NB: the ru_local field is different to the orphan-hood of the rule.) This fixes a bug that meant that RULES on class ops were never exported.