Pull request #601: CAS-13718
Merge in CASA/casa6 from CAS-13718 to master
* commit '803567ae467dadd22af4a77715ce6d0790c1c175':
Error in RH7 says it doesn't have permission to access data. Using a copy of the test data instead
Added the same uvrange selection test for gaincal
Added a new testcase to fringefit for the new uvrange selection
Added uvrange functionality to fringefit