SysV make (was YAPQ (yet another prompt question))

[Guy Harris]

>Or better yet, rip the bogosity out of make in the first place.

Nice idea if you have source, but plenty of people are stuck with a
"make" that has the bogosity in question, and if you intend to have your
Makefile used outside your site it's best to assume that the people in
question are likely to be stuck with it, and program defensively by
setting SHELL in the Makefile.