This partially reverts commit 6356a2c1.
The script is still added, but the install requires for numa is removed
and the import delayed.

This cloes #29

This reverts commit 44df042c.
There was nothing to fix. We depend on using the right
branch in dune-testtools that has the additional argument.

using > 1 process results in hard to debug issues

in our namespace, to allow better bigunsigned int handling in type
dispatches in vector/float cmp

defaults to fail to conserve old behaviour