Merge pull request #462 in CASA/casa6 from CAS-13461 to master
* commit '7bda31ccd8e0baf058348006f8e883b217aa6c7c': (39 commits)
moved modules to latest versions after CAS-13461 mergers
updated build.conf to latest CAS-13461 versions
Copied some .cc files where the header files were previously copied to CASAviewer (orphaned implementation files not compiled anywhere)
latest versions for the modules in build.conf for this branch
removed code that was moved to the other repositories (ALMAtasks, CASAviewer, CASAplotms, CASAplotserver)
different behavior with manylinux build VS RHEL7 build (CAS-13461)
casacore must be compiled with '-DCASADATA=...' to find measures tables using (CAS-13461)
add libpython path to compile line (CAS-13461)
build.conf advanced to most recent builds for this branch
updated build.conf to latest builds on CAS-13461
Updated build.conf to latest builds for parts of CAS-13461
moved task_phaseshift.py from tasks to private
removed references to gcw-pick and xml-casa-assembly from casatools readme
phaseshift.xml updated to match what's in casa6 build
phaseshift is new, moved phaseshift.xml from casa5/gcwrap to casatasks
removed unintentionally left remnants of a revious merge from msmetadata.xml
brought xml in reorganization branch into agreement with most recent built xml in master
propagate error result (CAS-13461)
output tweaks (CAS-13461)
changes needed for compilation (CAS-13461)
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