Move importmagic to separate repository.
Squashed 'importmagic/' content from commit a87526c

git-subtree-dir: importmagic
git-subtree-split: a87526c4953b626116138a99dbc9b91d30b74d31
Merge commit '02f0d5c2624897b11222775dee77fd363cf52f0d' as 'importmagic'
Use git subtree for importmagic.