XSection → PartonDistributions Relation

File in Physics/DeepInelastic/XSection	Includes file in Physics/PartonDistributions
BYPDF.h	PDFModelI.h
BYStrucFunc.h	PDFModelI.h
QPMDISStrucFuncBase.cxx	PDFModelI.h
QPMDISStrucFuncBase.h	PDF.h