Fixes an Evince regression introduced in commit 3d243e9c.

* guix/build/glib-or-gtk-build-system.scm (data-directories): Check the
  /mime sub-directory.

* gnu/packages/netpbm.scm (netpbm): Use svn-fetch for the source instead
    of a separately hosted tarball.

* gnu/packages/python.scm (python-pyparsing, python2-pyparsing): Update to 2.0.3.

* gnu/packages/gtk.scm (gtk+)[inputs]: Add CUPS.

* doc/emacs.texi (Emacs Initial Setup): Mention that it works
  out-of-the-box on GSD.

* configure.ac: Change version to 0.8.1.

* gnu/packages/gnunet.scm (libmicrohttpd): Update to 0.9.39.

* gnu/packages/version-control.scm (rcs): Update to 5.9.4.

* gnu/packages/parallel.scm (parallel): Update to 20150122.

* gnu/packages/gnupg.scm (libassuan): Update to 2.2.0.

* gnu/packages/linux.scm (util-linux)[source](snippet): Set
  "build_kill=no" in 'configure'.

* gnu/packages/linux.scm (e2fsprogs)[arguments]: Add --disable-blkid
  --disable-libuuid --disable-uuidd --disable-fsck.

* gnu/packages/linux.scm (util-linux): Update to 2.25.2.  Remove
  util-linux-perl.patch, and add util-linux-tests.patch.  Adjust
  'snippet'.
  [arguments]: Remove 'patch-chkdupexe' phase.  Add 'pre-check' phase.
  [native-inputs]: Add NET-BASE.
* gnu/packages/patches/util-linux-perl.patch: Remove.
* gnu/packages/patches/util-linux-tests.patch: New file.
* gnu-system.am (dist_patch_DATA): Adjust accordingly.

* gnu/packages/linux.scm (e2fsprogs): Update to 1.42.11.

* gnu/system/os-config.tmpl (services): New field.

* gnu/system/install.scm (log-to-info): Add GZIP to $PATH.

* doc/guix.texi (System Installation): Change image name to guix-usb-*.

* doc/guix.texi (Introduction): Introduce "Guix System Distribution".
  Add a couple of sentences about it.  Remove "Guixotic".
  (GNU Distribution): Likewise.
  (System Installation): Ditto.

* gnu/packages/patches/nvi-db4.patch: New file.
* gnu/packages/patches/nvi-dbpagesize-binpower.patch: New file.
* gnu/packages/nvi.scm (nvi): Make use of them.
* gnu-system.am (dist_patch_DATA): Add them.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/packages/admin.scm (sudo)[arguments]<#:configure-flags>: Add
  --with-rundir=/run/sudo --with-vardir=/var/db/sudo
  --with-iologdir=/var/log/sudo-io.

* gnu/system.scm (etc-directory): Add 'DBUS_FATAL_WARNINGS' in PROFILE.

* gnu/system.scm (emacs-site-file, emacs-site-directory): New
  procedures.
  (etc-directory): Add 'EMACSLOADPATH' setting to PROFILE.  Call
  'emacs-site-directory', and bind its result to /etc/emacs.

* gnu/packages/package-management.scm (guix-devel)[propagated-inputs]:
  Add GEISER.

Suggested by Omar Radwan <toxemicsquire4@gmail.com>.

* ROADMAP: Rewrite.

* guix/ui.scm (report-error): Export.
* guix/scripts/system.scm (read-operating-system): Report syntax errors
  using standard GNU format.  Report other errors using 'display-error'.

* gnu.scm (use-package-modules, use-service-modules,
  use-system-modules): New macros.

* guix/store.scm (run-with-store): Wrap 'run-with-state' in
  'call-with-values'.  Return only the first value.

* gnu/packages/autotools.scm (libtool): Update to 2.4.5.
  (libltdl): Adjust 'version' and 'source' to remain at 2.4.4.

* gnu/packages/kde.scm (phonon): Move automoc to native-inputs and qt to
    propagated inputs.

* gnu/packages/kde.scm (phonon): Update to 4.8.3.

* gnu/packages/linux.scm (perf)[arguments]: Add "lib=lib" to
  #:make-flags.

* gnu/packages/linux.scm (perf)[inputs]: Add SLANG.

* gnu/packages/slang.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

* gnu/packages/linux.scm (perf)[inputs]: Uncomment documentation inputs.

* gnu/packages/linux.scm (perf)[inputs]: Add PYTHON-2.

* gnu-system.am (dist_patch_DATA): Add patches for aegis, clucene,
    libcanberra and lua-5.1.

* gnu/packages/rdf.scm (python-rdflib): New variable.

* gnu/packages/python.scm (python-html5lib, python2-html5lib): New variables.

Reported by Andreas Enge <andreas@enge.fr>.

* guix/scripts/package.scm (with-null-error-port): New macro.
  (search-path-environment-variables): Wrap 'search-path-as-list' call
  in 'with-null-error-port'.

* gnu/packages/python.scm (python-isodate, python2-isodate): New variables.