Squashed 'extlib/snoopy/' content from commit 07bd28d

git-subtree-dir: extlib/snoopy
git-subtree-split: 07bd28d8a2f78576e39f1a820159b25398b2449e
Merge commit 'd96af4d19d0a08972ea45082aae6aa0262b01aa7' as 'extlib/snoopy'
Replace Snoopy with new version