bug#1417: 23.0.60; defmacro declare syntax trips up on offsets

[Stefan Monnier]

> (defmacro some-macro (some-directory &rest body-forms)
>   "Bla bla bla. Yada yada yada."
>   ;; (declare (indent 1) (debug sexp body))
                                  ^^^^^^^^^
                                 (sexp body)

So the real bug is that this error is not caught in
`macro-declaration-function', and that error messages in Edebug's
parsing code are user-unfriendly.


        Stefan