Pull request #1: CAS-13859 Break circular dependency of casacpp modules
Merge in CASA/casafeather from CAS-13859 to master
* commit '8e2824cb5b9c0b36c06c0cf4cb487ee437255ff9':
Update casa-source pointer
Remove files that are no longer there
Make changes due to move of files in casa6 repo
updated casa-source to most recent casa6 CAS-13857 changes