mobject → vault Relation

File in core/steam/mobject	Includes file in core/vault
builder / builder-tool-test.cpp	media-access-mock.hpp
mobject-interface-test.cpp	media-access-mock.hpp
mobject-ref-test.cpp	media-access-mock.hpp
placement-hierarchy-test.cpp	media-access-mock.hpp
session / testclip.cpp	media-access-mock.hpp