Cross Reference: /prebuilts/sdk/tools/jacks

`Name`	`Date`	`Size`
Up to higher level directory
`jack-2.28.RELEASE.jar`	06-Dec-2016	`9.5M`
`jack-3.36.CANDIDATE.jar`	06-Dec-2016	`10.4M`
`jack-4.7.BETA.jar`	06-Dec-2016	`10.8M`