[v3] AM_MAKEFLAGS, AM_RUNTESTFLAGS removal

[Benjamin Kosnik]

> > The patch is fine, but it does not help (i. e. speed up things on a
> > multiprocessor machine). This is because there is basically one
> > large call to runtest, which then runs on one processor. And I have
> > not found any way to convince runtest to run its test cases in
> > parallel. So DejaGNU might have to be extended to support that?!
> 
> This is why there was, once upon a time, support for running the
> testsuite with QMTest - it would be happy to parallelize tests for
> you.

This is now bug 33612.

FWIW, I do not plan to work on this, although skilled dejagnu hackers
who want to mess around with this are encouraged to make a stab at
fixing it.

-benjamin