Merge branch 'master' into dbus-update

.dir-locals.el

Makefile.am

doc/contributing.texi

doc/emacs.texi

doc/guix.texi

emacs/guix-base.el

emacs/guix-command.el

emacs/guix-devel.el

emacs/guix-pcomplete.el

gnu-system.am

gnu/build/linux-container.scm

gnu/packages/algebra.scm

gnu/packages/avahi.scm

gnu/packages/backup.scm

gnu/packages/bioinformatics.scm

gnu/packages/cyrus-sasl.scm

gnu/packages/databases.scm

gnu/packages/emacs.scm

gnu/packages/fish.scm

gnu/packages/freeipmi.scm