Cross Reference: /development/ndk/platforms/android-21

`Name`	`Date`	`Size`
Up to higher level directory
`arch-arm/`	05-Oct-2017
`arch-arm64/`	05-Oct-2017
`arch-mips/`	05-Oct-2017
`arch-mips64/`	05-Oct-2017
`arch-x86/`	05-Oct-2017
`arch-x86_64/`	05-Oct-2017
`include/`	05-Oct-2017