Merge branch 'core-updates'

HACKING

Makefile.am

build-aux/download.scm

distro/packages/acl.scm

distro/packages/attr.scm

distro/packages/autotools.scm

distro/packages/base.scm

distro/packages/bash.scm

distro/packages/bdb.scm

distro/packages/bootstrap.scm

distro/packages/compression.scm

distro/packages/gawk.scm

distro/packages/gettext.scm

distro/packages/guile.scm

distro/packages/ld-wrapper.scm

distro/packages/libsigsegv.scm

distro/packages/linux.scm

distro/packages/lsh.scm

distro/packages/m4.scm

distro/packages/make-bootstrap.scm