Better protection against small eigenvalue in track error matrix in CFit.cxx (TrkVKalVrtCore-00-03-63)

	* New return codes
	* Add to diagonal if eigenvalue of track error matrix is <10^-15 in CFit.cxx
	* TrkVKalVrtCore-00-03-63

2016-09-20  Vadim Kostyukhin <Vadim.Kostyukhin@cern.ch>

	* Correct error in cfTrkCovarCorr (correlations were always downscaled!)
	* Replace 3.14159.. by M_PI
	* TrkVKalVrtCore-00-03-62

2016-09-19  scott snyder  <snyder@bnl.gov>

	* Tagging TrkVKalVrtCore-00-03-61.
	* Fix most gcc6 misleading indentation warnings.