It appears that travis drastically increased the amount of available CPUs

Well, this is awesome - we just happen to be equipped to take advantage
of this ;)

Remove the branch-name limitations - now a smoke takes fraction of the time
it used to, no point to limit what we smoke anymore.

At the same time reuce the amount of threads building the perls - older
binaries do not build very well on j32. This is a temporary thing - the
perl-building will soon be exported away anyway.