quark → util Relation

File in diff/quark	Includes file in util
DiffColorModel.h++	quark / MutableObject.h++
DiffColorModel.h++	quark / Quark.h++
DiffModel.h++	quark / MutableObject.h++
DiffRange.h++	quark / Quark.h++
DiffSequence.h++	quark / Quark.h++