Cross Reference: /external/clang/test/Modules/Inputs/macro-ambiguity

`Name`	`Date`	`Size`
Up to higher level directory
`a/`	21-Aug-2018
`b/`	21-Aug-2018
`c/`	21-Aug-2018
`d/`	21-Aug-2018
`e/`	21-Aug-2018
`module.modulemap`	21-Aug-2018	`684`