Merge pull request #552 in CASA/casa6 from CAS-12702 to master
* commit '0a474e9a4161930934718d8ff3c8e98501a54816':
Changed garbage.rgn files to not use os.cwd and added garbage.rgn file to the teardown
removed suite function for casa5
Added descriptions to the new split test cases
removed some comments
split up large test cases and changed to match current test format