Merge pull request #29 in CASA/casaviewer from CAS-13461 to master
* commit '6a354bd2e2cdbf5e2b682fd0af2a046977013f13':
updated casa-source to point to (hopefully) final CAS-13461 state before PR
Copied some .cc files where the header files were previously copied to CASAviewer (orphaned implementation files not compiled anywhere)
move casaviewer XML files to casaviewer repository (CAS-13461)
updated casa-source to most recent casa6 CAS-13461 changes, removed one copied code duplicated in the wrong place
casa-source brought up to date with latest merge of master into casa6 for this branch
updated casa-source to most recent CAS-13461
Brought copied casaviewer code up to date with recent changes in casa6 master
Updated code with fresh copies of moved code from current casa6 trunk
deal with java 11.0 in do-config
updated casaviewer.pro to remove Mutex.cc
casa-source now synced with casa6 CAS-13461 after merge with master
pull display code that is not part of casatools up into casaviewer repo (CAS-13461)
