Add Manolis to 'AUTHORS'.

gnu: Add GNU Mach headers.

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

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

gnu: gnunet: Fix failing testcases.

* gnu/packages/gnunet.scm (gnurl): Add pkg-config.
* gnu/packages/patches/gnunet-fix-tests.patch: Append fix for integration testcases.

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

guix build: Move 'set-build-options' call earlier.

* guix/scripts/build.scm (guix-build): Move 'set-build-options' call
  before 'show-what-to-build'.

store: Add comments for the stracer.

* guix/store.scm (%worker-magic-1, %worker-magic-2): Add comments.

gnu: isc-dhcp: Upgrade to 4.3.0.

* gnu/packages/admin.scm (isc-dhcp): Upgrade to 4.3.0.

gnu: curl, gnurl: Fix failing testcase 172.

* gnu/packages/patches/curl-fix-test172.patch: New file.
* gnu-system.am (dist_patch_DATA): Add the patch file.
* gnu/packages/gnunet.scm (gnurl): Apply the patch file.
* gnu/packages/curl.scm (curl): Apply the patch file.

Signed-off-by: Andreas Enge <andreas@enge.fr>

gnu: gnunet: Correct typo.

* gnu/packages/gnunet.scm (gnunet): Correct typo.

gnu: texinfo: Make version 4.13a available.

* gnu/packages/texinfo.scm (texinfo-4): New variable.

gnu: gnunet: Add input libmicrohttpd.

* gnu/packages/gnunet.scm (gnunet): Add input libmicrohttpd and improve
    formatting.

store: Change 'export-paths' to always export in topological order.

* guix/store.scm (export-paths): Pass PATHS through
  'topologically-sorted' before iterating.
* tests/store.scm ("export/import paths, ensure topological order"): New
  test.

gnu: lout: Change docdir from "doc" to "share/doc"

* gnu/packages/lout.scm (lout):
  Change docdir from "doc" to "share/doc".

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

gnu: Add GNUnet.

* gnunet/packages/gnunet.scm (gnunet): New variable.
* gnu/package/patches/gnunet-fix-scheduler.patch: New file.
* gnu/package/patches/gnunet-fix-tests.patch: New file.
* gnu-system.am (dist_patch_DATA): Add the above two patch files.

Co-authored-by: Andreas Enge <andreas@enge.fr>
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: gstreamer 1.0.10: Temporarily disable tests.

* gnu/packages/gstreamer.scm (gstreamer): Add 'arguments' field.

gnu: openssh: Upgrade to 6.5p1.

* gnu/packages/ssh.scm (openssh): Upgrade to 6.5p1.

gnu: openssl: Upgrade to 1.0.1f.

* gnu/packages/openssl.scm (openssl): Upgrade to 1.0.1f.

union: Do not compare directories upon collision.

* guix/build/union.scm (file=?): Return #f if FILE1 and FILE2 are not
  regular files.  Fixes a bug whereby collisions among directories would
  lead to the invocation of 'file=?' and thus 'call-with-input-file' on
  directories.  Reported by Mark H. Weaver <mhw@netris.org>.

download: Provide a 'User-Agent' field in HTTP requests.

Fixes <http://bugs.gnu.org/16703>.
Reported by Raimon Grau <raimonster@gmail.com>.

* guix/build/download.scm (http-fetch)[headers]: New variable.
  Pass it as #:headers or #:extra-headers to 'http-get' and
  'http-get*'.

gnu: dmd: Add SLiM service.

* gnu/system/dmd.scm (xorg-service): Remove.
  (xorg-start-command, slim-service): New procedure.

gnu: dmd: Fix X font directory name in X service.

* gnu/system/dmd.scm (xorg-service)[xserver.conf]: Fix directory name in
  'FontPath' entry for FONT-ADOBE75DPI.