gnu: icu4c: Upgrade to 52.1.

* gnu/packages/icu4c.scm (icu4c): Upgrade to 52.1.

gnu: patchelf: Fix platform page size determination.

* gnu/packages/patches/patchelf-page-size.patch: New file.
* gnu/packages/elf.scm (patchelf): Add the patch.
* gnu-system.am (dist_patch_DATA): Add the patch.

guix build: Factorize common options.

* guix/scripts/build.scm (show-build-options-help,
  set-build-options-from-command-line): New procedures.
  (show-help): Remove description of --dry-run,
  --fallback, --no-substitutes, --max-silent-time, and --cores.  Call
  'show-build-options-help'.
  (%standard-build-options): New variable.
  (%options): Remove --dry-run, --fallback, --no-substitutes,
  --verbosity, --max-silent-time, and --cores.  Add
  %STANDARD-BUILD-OPTIONS.
  (guix-build): Use 'set-build-options-from-command-line' instead of
  'set-build-options'.
* guix/scripts/archive.scm (show-help): Remove description of --dry-run,
  --fallback, --no-substitutes, --max-silent-time, and --cores.  Call
  'show-build-options-help'.
  (%options): Remove --dry-run, --fallback, --no-substitutes,
  --verbosity, --max-silent-time, and --cores.  Add
  %STANDARD-BUILD-OPTIONS.
  (export-from-store): Call 'set-build-options-from-command-line'
  instead of 'set-build-options.

gnu: Add xapian.

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

gnu: gnurl: Update to 7.35.0.

* gnu/packages/gnunet.scm (gnurl): Update to 7.35.0.

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

gnu: Add hdf5.

* gnu/packages/maths.scm (hdf5): New variable.
* gnu/packages/maths.scm (octave): New input hdf5.

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

gnu: dmd: Sleep longer in tests, for slower machines.

* gnu/packages/patches/dmd-tests-longer-sleeps.patch: New file.
* gnu/packages/admin.scm (dmd): Add the patch.
* gnu-system.am (dist_patch_DATA): Add it.

gnu: Add ttf-dejavu.

* gnu/packages/fonts.scm (ttf-dejavu): New variable.

Update .gitignore for Guile 2.0.9 bootstrap binaries.

* .gitignore: Change version number in ignored Guile bootstrap
  binaries from 2.0.7 to 2.0.9.

gnu: ratpoison: Patch to use $SHELL instead of /bin/sh.

* gnu/packages/patches/ratpoison-shell.patch: New file.
* gnu/packages/ratpoison.scm (ratpoison): Add patch.
* gnu-system.am (dist_patch_DATA): Add patch.

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.