am ff779c0f: Update win_sdk to put binaries in SDK/platform-tools.

Merge commit 'ff779c0f2a19985a9a6733d4864b4b56b20729bd' into gingerbread-plus-aosp

* commit 'ff779c0f2a19985a9a6733d4864b4b56b20729bd':
  Update win_sdk to put binaries in SDK/platform-tools.