[PATCH] support: Kill process group for test failure

[Florian Weimer]

* Adhemerval Zanella:

> Some testcases that create multiple subprocesses might abort or exit
> prior waiting for their children.  In such case, support_test_main
> does not try to kill the spawned test process group (as in the
> test timeout case).

Does this actually work?  Is the process group preserved if a process is
reparented to init?

Thanks,
Florian