Merge branch 'format' into 'master'

src/archive.rs

src/bin/ar.rs

src/bin/mkfs.rs

src/bin/mount.rs

src/disk/cache.rs

src/disk/file.rs

src/disk/sparse.rs

src/ex_node.rs

src/extent.rs

src/filesystem.rs

src/header.rs

src/mount/fuse.rs

src/mount/redox/mod.rs

src/mount/redox/resource.rs

src/mount/redox/scheme.rs

src/node.rs

src/tests.rs