Revert "Revert "Build FUTILITY tool from futility-host."" am: 69ad150dd3 am: 56e0166eb8 am: 98eb433d99 am: e5609912f0 am: c0f5628788
am: 22bc9fddd2

Change-Id: If0976e308f8c27329f7eb390b46af817137b87eb