parallel boot with synchronised output

[Petter Reinholdtsen]

[Olivier Sessink]
> I applied the patch from Petter, and added a lot of new code,
> buffering all output from each script, and after the script has
> finished, showing that output in one block. So we now have a
> parallel init without the output mess that the previous version
> created.

This sounds cool.  Do you handle time jumps, very
long-running/non-terminating scripts and interactive scripts as well?

Is it possible to get it to run the script in sequence (aka no
parallelization) as well?  I suspect it would be nice for
debugging. :)