run-tests: allow option parser to be extended This patch moves the OptionParser population into its own function so consumers may modify the OptionParser before arguments are evaluated. This will allow consumers to add custom options, set different defaults, etc. [ original upstream message ]

run-tests: use return values instead of sys.exit [ original upstream message ]

run-tests: Pass arguments into argument parser Before, arguments were not passed into the optparse.OptionParser instance and were coming from sys.argv. This patch enables consumers to define the list of arguments to parse without having to adjust sys.argv. [ original upstream message ]