Merge branch 'core-updates'

doc/guix.texi

gnu-system.am

gnu/packages/admin.scm

gnu/packages/base.scm

gnu/packages/bash.scm

gnu/packages/bootstrap.scm

gnu/packages/commencement.scm

gnu/packages/cross-base.scm

gnu/packages/ed.scm

gnu/packages/emacs.scm

gnu/packages/fontutils.scm

gnu/packages/gcc.scm

gnu/packages/gettext.scm

gnu/packages/gnome.scm

gnu/packages/gnupg.scm

gnu/packages/gnuzilla.scm

gnu/packages/haskell.scm

gnu/packages/libidn.scm

gnu/packages/libunistring.scm

gnu/packages/linux.scm