Squashed 'emacs.d/lisp/magit/' content from commit 55b92aa

git-subtree-dir: emacs.d/lisp/magit
git-subtree-split: 55b92aa1e26c4f36d08208e7177bce3de0aae3ac
Merge commit '403e088ed35989a04f2d3ead1f8f7285e73558f2' as 'emacs.d/lisp/magit'