tree-wide: remove Emacs lines from all files This should be handled fine now by .dir-locals.el, so need to carry that stuff in every file.
tree-wide: sort includes in *.h This is a continuation of the previous include sort patch, which only sorted for .c files.
importd: add API for exporting container/VM images Also, expose it in machinectl.
import: split out compression logic, so that we can share it with between import and pull calls