Merge branch 'core-updates'

build-aux/build-self.scm

gnu/local.mk

gnu/packages/admin.scm

gnu/packages/agda.scm

gnu/packages/algebra.scm

gnu/packages/android.scm

gnu/packages/audio.scm

gnu/packages/authentication.scm

gnu/packages/base.scm

gnu/packages/bash.scm

gnu/packages/bdw-gc.scm

gnu/packages/bioinformatics.scm

gnu/packages/bison.scm

gnu/packages/boost.scm

gnu/packages/bootloaders.scm

gnu/packages/build-tools.scm

gnu/packages/c.scm

gnu/packages/calendar.scm

gnu/packages/cdrom.scm

gnu/packages/check.scm