PC-GAMESS: retire unit tests and add them as regressions
ADF, GAMESS-US: add reference point at start of momonts, and test for that
Merge branch 'moments' of github.com:langner/cclib into moments

Conflicts:
	test/regression.py
Unittests: nicer summaries with a description
GAMESS-UK, Molpro, NWChem, ORCA, Psi: add reference point to beginning of moments