Pull request #1016: CAS-14697
Merge in CASA/casa6 from CAS-14697 to master
* commit 'c4b13bfdf7ec8fe89ba3eee9add05d5d15ed9fd3':
new tests added, implementation for CAS-14697 done CAS-14697 : FIELD SDM additions with very preliminary test change CAS-14697 : fill new SDM related non-standard columns as appropriate