Merge remote-tracking branch 'origin/h3-gentoo-danil' into h2-gentoo-danil
emacs: Indent recipe, tramp password and more.

Add indent recipe.
Expire tramp password cache after 10 minutes.
Conf mode for securetty file.
Merge remote-tracking branch 'origin/h3-gentoo-danil' into h2-gentoo-danil
Merge remote-tracking branch 'origin/h2-gentoo-danil' into h3-gentoo-danil