Merge pull request #1100 in CASA/casa from bugfix/CAS-12651 to master
* commit '4fe6022b570c323bf25a27fac03e0827b4669431':
Added prepCfcache to test_tclean. The function copies the cfcache to the local testing directory.
Merge pull request #1097 in CASA/casa from CAS-12631 to master
* commit '3787baf054b33d65bc57b03f4f530e41d7a8c5f0':
Rename private method, reword parameter description
Change parameter name to make consistent
Added parameter to require AnnRegion has valid ImageRegion