Re: mark expensive tests

[Paul Eggert]

Michael Albinus wrote:
> I could start with it, in the emacs-25 branch. Those targets do cover #2,
> #3 and #4 tests. Which make target shall we use for #1? "make check-smoke"?

I was thinking that we use just 3 categories for cost, so #1 would be 'make 
check'. If there are some special tests that don't fall under the expensiveness 
axis, we can invent a new name for them.