Cross Reference: /external/clang/test/Modules/Inputs/merge-typedefs

`Name`	`Date`	`Size`
Up to higher level directory
`a1.h`	21-Aug-2018	`234`
`a2.h`	21-Aug-2018	`33`
`b1.h`	21-Aug-2018	`249`
`b2.h`	21-Aug-2018	`33`
`module.modulemap`	21-Aug-2018	`183`