branch dbus-update updated (e38a71e -> 938ecdf)

[Mark H. Weaver]

mhw pushed a change to branch dbus-update
in repository guix.

      from  e38a71e   gnu: qemu: Adjust to newer GLib versions.
      adds  8ca73fc   gnu: gnurl: Update to 7.44.0.
      adds  1d19bc1   gnu: elogind: Provide the file name of 'halt' and 
'reboot'.
      adds  c6f8e9d   guix archive: Add '--extract'.
      adds  ea0c6e0   substitute: Expose narinfo access.
      adds  d23c20f   Add 'guix challenge'.
      adds  cbe9505   gnu: units: Update to 2.12.
      adds  5180521   build: Set DOT_USER_PROGRAM for Emacs interface.
      adds  3805661   emacs: config: Use "emacs-config-" prefix for constants.
      adds  4ab70c5   emacs: devel: Add indentation rules for 'modify-phases' 
keywords.
      adds  075c3eb   gnu: curl: Update to 7.45.0.
      adds  212efe9   gnu: gnurl: Update to 7.45.0.
      adds  a5d06c0   gnu: giflib: Update to 5.1.1.
      adds  9e84fe2   Revert "gnu: curl: Update to 7.45.0."
      adds  b1599b5   Revert "gnu: giflib: Update to 5.1.1."
       new  7c6fb73   Merge branch 'master' into dbus-update
       new  8cab758   gnu: curl: Update to 7.45.0.
       new  938ecdf   gnu: giflib: Update to 5.1.1.

The 3 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "adds" were already present in the repository and have only
been added to this reference.


Summary of changes:
 Makefile.am                  |    2 +
 configure.ac                 |    1 +
 doc.am                       |    1 +
 doc/contributing.texi        |   11 ++
 doc/guix.texi                |  154 ++++++++++++++++++++++++++-
 emacs/guix-backend.el        |    3 +-
 emacs/guix-config.el.in      |   16 ++--
 emacs/guix-devel.el          |   21 ++++-
 emacs/guix-external.el       |   18 +++-
 emacs/guix-profiles.el       |    2 +-
 gnu/packages/curl.scm        |    6 +-
 gnu/packages/freedesktop.scm |    3 +
 gnu/packages/gnunet.scm      |    8 +-
 gnu/packages/image.scm       |    4 +-
 gnu/packages/maths.scm       |    4 +-
 guix/scripts/archive.scm     |   10 ++
 guix/scripts/challenge.scm   |  244 ++++++++++++++++++++++++++++++++++++++++++
 guix/scripts/substitute.scm  |   40 ++++++-
 po/guix/POTFILES.in          |    1 +
 tests/challenge.scm          |  114 ++++++++++++++++++++
 tests/guix-archive.sh        |   15 +++-
 21 files changed, 647 insertions(+), 31 deletions(-)
 create mode 100644 guix/scripts/challenge.scm
 create mode 100644 tests/challenge.scm