bug#10150: deactive->inactive, inactivate->deactivate spelling fixes

[Chong Yidong]

Wolfgang Jenkner <wjenkner@inode.at> writes:

> Paul Eggert <eggert@cs.ucla.edu> writes:
>
>> Standard English uses the adjective "inactive" and the verb
>> "deactivate"; "deactive" and "inactivate" are solecisms.
>
> Actually, at least the Longman Dictionary of the English Language (2nd
> ed. 1991) contains
>
> inactivate vt to make inactive - inactivation n
>
> without any kind of restriction in usage or register.

Right.  So the only thing that actually needs a fix is
follow-deactive-menu.