Auxiliary script which runs a RQG test within a loop and checks if some assigned bad effect occurs.

This script is technically very similar to util/simplify-grammar.pl.
The main difference is that we do not run any grammar modification.
Purpose:
   a) Show if a different MySQL version m suffers from the same bad effect
       Have a bug found in MySQL version n.
       Run this script with proper configuration against a different MySQL version m
        We stop the loop if we
       - replayed the expected bad effect or
       - the number of trials was reached
   b) Brute force bug hunt based on one RQG grammar and variation of the seed value
        Run $trial loop rounds with incremented seed value
        Delete all results where we have not reached the expected bad effect.
        typical configuration: @desired_status_codes = (STATUS_ANY_ERROR);