Pull request #1087: CAS-14849
Merge in CASA/casa6 from CAS-14849 to master
* commit 'b7c9977a194ec0f6d5ce3a54c3a47be204959703':
casaconfig 1.5.2
casaconfig to 1.5.2.dev to address issues with failing tests
casaconfig to 1.5.1, commented out casaconfig dev info from setup.py
changes to use development casaconfig for CAS-14849 (1.5.1.dev1)