am 7d3106be: am b86b7f72: Re-organize the SDK, moving the build tools out of the platforms.

Merge commit '7d3106bebbfe76a334567c59303a75897af915b2'

* commit '7d3106bebbfe76a334567c59303a75897af915b2':
  Re-organize the SDK, moving the build tools out of the platforms.