gp → NCollection Relation

File in src/gp	Includes file in src/NCollection
gp_Trsf.hxx	NCollection_Mat4.hxx
gp_TrsfNLerp.hxx	NCollection_Lerp.hxx
gp_Vec2f.hxx	NCollection_Vec2.hxx
gp_Vec3f.hxx	NCollection_Vec3.hxx