Run CIAO with it's own PARMFILES

[hamogu]

Not all CIAO code in the examples punleanrs sufficiently, and it is useful to run tests in parallel, so CIAO code should be isolated in it's own PFILES environment. The contrib scripts provide a a decorator to do that.

[hamogu]

In fact it might be best to punlearn everywhere for the teaching effect if users look at these scripts, but still run with the contrib decorator in preparation of parallelizing this.