fieldapr → parallel Relation

File in reco/littrack/cbm/qa/fieldapr	Includes file in reco/littrack/parallel
CbmLitFieldApproximationQa.cxx	LitFieldGrid.h
CbmLitFieldApproximationQa.cxx	LitFieldSlice.h
CbmLitFieldApproximationQa.cxx	LitFieldValue.h