Fix extended sequences in the type system #1568
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sssssorta. this is very messy. and it doesn't fix subtypep. and it breaks (subtypep '(cons foo) 'sequence).
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Currently this fixes typep and not subtypep. and it breaks
(subtypep '(cons foo) 'sequence).I think Baker's subtypep is kind of totally incompatible with extended sequences in any meaningful way, because
sequenceis effectively in all of the array, list, and class "type families".