RE: emacs-25 10597c9: Don't use 'find-program'

[Drew Adams]

> (Personally I think renaming it to grep-find-program was a too-literal
> adherence to the namespace convention. It is the find program, it just
> happened to live in grep.el. Its general usefulness is reflected in the
> autoload. Maybe you'd be happier moving it to some find*.el file.)

+1.  It should be called `find-program', IMO.

If there is really a need for a separate such variable that is
specific to `grep' (in addition to a more general such variable,
for most find-program uses), then _that_ variable could be named
`grep-find-program'.