typo
attempt to fix #316

This only fixes the specific state race discussed in the ticket.  Seems to solve the problems I saw on archer.
This commit also fixes the MPI tests on archer
attempt tp fix #317
make tests more verbose
another iteration on test 114
typo :(
typo :(
some more verbosity on wait; further tweaks of timing
fix for #323 -- startup errors due to missing launch methods etc. are now reported via unit.stderr