[PATCH] build: drop variable HAVE_EMACS. use WITH_EMACS instead

[David Bremner]

Tomi Ollila <tomi.ollila at iki.fi> writes:

> On Tue, Jun 11 2019, David Bremner wrote:
>
>> The extra flexibility of having both HAVE_EMACS (for yes, there is an
>> emacs we can use) and WITH_EMACS (the user wants emacs support) lead
>> to confusion and bugs. We now just force WITH_EMACS to 0 if no
>> suitable emacs is detected.
>
> LGTM.

pushed to master

d