Merge pull request #522 in CASA/casa6 from CAS-13692 to master
* commit 'be7dbf5d91b3e09046ce18713d88b6c6586b6529':
Remove duplicates and add error checking in cases where file syntax is correct but file does not exist
Update to check for all realpaths fora given test. Loop through components first before adding default list to empty components
