Pull request #1076: CAS-14867
Merge in CASA/casa6 from CAS-14867 to master
* commit '52fd7a98556ee8739148e2007a8a04ed5907d691':
Changed the name of the reference pccor cal table to avoid conflicts with master and 6.7.6 branches
Added a mechanism to unwrap phases for tones, which shall solve the issue of non referenced delays flipping signs.
Pull request #1075: CAS-14194
Merge in CASA/casa6 from CAS-14194 to master
* commit 'b1e3123ed19a5629ffb6176fb67b4137ca5731c5':
Added a test for this use case
Fringefit now excludes antennas with too few visibilities to be usefully solved for in a solution interval
Plumbed the logger throught to the fringefit grid builder
Tweaked fringefitter to remove antennas that have almost no data in a solution interval
Changed the fringefit least-squares routine to use modified cholesky method for factoring matrix
Added a handler for gsl errors to FringeJones.cc
