bug#13023: 24.3.50; lexical binding does not work within defadvice

[Richard Stallman]

    I don't think there's a need to add any new primitive.  If someone wants
    to dig into advice.el to try and fix it, it can be fixed there (as
    evidenced by advice-add).
    I personally would rather tell people to use advice-add instead.

That would, in effect, be an incompatible change in interface.
Why make the change?  Is there something wrong with defadvice?

-- 
Dr Richard Stallman
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