testsuite::test_multimeter_accu - test support for multimeter accumulation modeSynopsis:
(test_multimeter_accu.sli) run -> dies if assertion failsDescription:
1. Test that all recording flags incompatible with /to_accumulator are set to false
2. Simulate iaf_cond_alpha net with poisson input and record detailed and accumulated
3. Run network for different thread numbers to check accumulation across threads.