Cross Reference: /external/clang/test/Preprocessor/Inputs/microsoft-header-search

`Name`	`Date`	`Size`
Up to higher level directory
`a/`	22-Oct-2020
`falsepos.h`	22-Oct-2020	`67`
`findme.h`	22-Oct-2020	`80`
`include1.h`	22-Oct-2020	`38`