Use the new sdk/build/tools.atree.
Use the new sdk/build/tools.atree.

As the sdk.git project is branched differently from the rest
of the platform, it's important to be able to control what
goes in the tools folder of the SDK on a per-branch basis.

Right now development/build/sdk.atree control what goes in
the tools folder (coming almost only from sdk.git) which causes
problems when the development.git and sdk.git branches are not
in sync.

Change-Id: I9158501cd68783d593e49e5fdea7f17d19b0120f

knone1/platform_manifest,xorware/android_build,xorware/android_build,fallouttester/platform_manifest,ND-3500/platform_manifest,xorware/android_build,see4ri/lolili,xorware/android_build,hagar006/platform_manifest,xorware/android_build,RR-msm7x30/platform_manifest,pranav01/platform_manifest,Hybrid-Power/startsync