Merge branch 'core-updates'

Makefile.am

NEWS

configure.ac

doc/guix.texi

gnu/local.mk

gnu/packages/autotools.scm

gnu/packages/backup.scm

gnu/packages/base.scm

gnu/packages/boost.scm

gnu/packages/bootstrap.scm

gnu/packages/c.scm

gnu/packages/check.scm

gnu/packages/cmake.scm

gnu/packages/commencement.scm

gnu/packages/compression.scm

gnu/packages/conky.scm

gnu/packages/cross-base.scm

gnu/packages/cups.scm

gnu/packages/databases.scm

gnu/packages/dico.scm