Pull request #35: CAS-13867: Clean up of #ifdef conditional compilations
Merge in CASA/casaviewer from CAS-13867 to master
* commit '467fc921416196fa642778cec0e5c29accdacb78':
Do not use CASATOOLS ifdef but rather USE_GRPC where appropiate.
Do not define CASATOOLS. Define USE_GRPC where needed.
Advance casa-source pointer for CAS-13867
Update to the latest casa-source pointer from branch CAS-13867