bug#62762: 'make' often errors with "Org version mismatch" after pulling a new version of the code

[Stefan Monnier]

> If you want to find them, you will have to write the code to detect
> those dependencies, and then look at the graph produced from them.
> There's no other way (unless Stefan happens to remember some by
> heart, by some luck).

I think looking for calls to `provide` that are not at the end of files
is a good first step to finding the obvious ones (if my memory serves,
viper and ediff are two examples in Emacs's own code.  The problem is
more common outside of Emacs because apparently fewer janitors roam
those realms).

Of course, the early files provide many other examples where we "solve"
the dependencies by hand to get things to bootstrap.


        Stefan