[FYI] New public branch 'parallal-tests-maint'

[Stefano Lattarini]

I've created a new public branch 'parallal-tests-maint', which is meant
for small improvements (mostly in testing/documentation) to the Automake
parallal-tests functionality.  It is meant to be merged to maint
eventually, but before doing that merge I'd like to have the new commits
properly reviewed and scrutinized (that's whay I'm creating this branch
instead of applying the commits directly to maint).

Patches will follow soonish.

Regards,
  Stefano