QPID-5336: Don't hardcode location of bash in shell scripts
  As bash isn't specified by POSIX its location is variable.
  Specifically under BSDs it isn't found in /bin/bash.
QPID-5306: Improve test wrapper to avoid using getopt for long options
  Using getopt with long options is a gnu extension and so best avoided
  for portability reasons.
QPID-5330: Typo in original checkin