Squashed 'BuildTools/' content from commit 9dd603c

git-subtree-dir: BuildTools
git-subtree-split: 9dd603cd3f0f38bb6deeb306b55034e4e8d8c0b5
Merge commit 'aea9ba50aa52aee2d7a02a684657bb2536271d9c' as 'BuildTools'