Merge branch 'master' into core-updates

Makefile.am

NEWS

build-aux/compile-all.scm

doc/guix.texi

etc/release-manifest.scm

gnu/installer.scm

gnu/local.mk

gnu/packages/bioconductor.scm

gnu/packages/bioinformatics.scm

gnu/packages/bootloaders.scm

gnu/packages/cook.scm

gnu/packages/cran.scm

gnu/packages/dlang.scm

gnu/packages/emacs-xyz.scm

gnu/packages/engineering.scm

gnu/packages/games.scm

gnu/packages/gnome.scm

gnu/packages/gnuzilla.scm

gnu/packages/gpodder.scm

gnu/packages/guile-xyz.scm