Cross Reference: /external/libcxx/test/std/experimental/filesystem/class.path/path.member/path.modifiers

`Name`	`Date`	`Size`
Up to higher level directory
`clear.pass.cpp`	06-Dec-2017	`995`
`make_preferred.pass.cpp`	06-Dec-2017	`1.2K`
`remove_filename.pass.cpp`	06-Dec-2017	`1.7K`
`replace_extension.pass.cpp`	06-Dec-2017	`1.7K`
`replace_filename.pass.cpp`	06-Dec-2017	`1.6K`
`swap.pass.cpp`	06-Dec-2017	`1.8K`