gnu: mesa: Correct another typo.

* gnu/packages/gl.scm (mesa)[arguments]: Fix typo (svrast -> swrast).

gnu: wget: Fix test-504 failures.

* gnu/packages/wget.scm (wget)[source]: Add patch.
* gnu/packages/patches/wget-fix-504-test-timeout.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

Merge branch 'master' into core-updates

gnu: librep: Update to 0.92.6.

* gnu/packages/sawfish.scm (librep): Update to 0.92.6.
[arguments]: New field.
[native-inputs]: Add AUTOCONF-WRAPPER, AUTOMAKE, and LIBTOOL.

gnu: lsh: Use libc's argp instead of the bundled one.

* gnu/packages/ssh.scm (lsh)[arguments] <#:configure-flags>: Add
--with-system-argp and CPPFLAGS=-DHAVE_ARGP_PARSE.
<#:phases>: In 'pre-configure' phase, modify src/Makefile.in.

gnu: python-minimal@2: Add dependencies on libffi and zlib.

* gnu/packages/python.scm (python2-minimal)[inputs]: Add LIBFFI and ZLIB.
[arguments]: Remove.

gnu: elogind: Build with gperf 3.0.

* gnu/packages/gperf.scm (gperf-3.0): New variable.
* gnu/packages/freedesktop.scm (elogind)[native-inputs]: Use GPERF-3.0
instead of GPERF.

gnu: Add pdfgrep.

* guix/gnu/packages/pdf.scm (pdfgrep): New variable.

Signed-off-by: Leo Famulari <leo@famulari.name>

gnu: graphite2: Fix test failure caused by rounding error on 32-bit CPUs.

* gnu/packages/patches/graphite2-ffloat-store.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/fontutils.scm (graphite2): Use it.

gnu: linux-libre: Update to 4.10.4.

* gnu/packages/linux.scm (%linux-libre-version): Update to 4.10.4.
(%linux-libre-hash): Update hash.

gnu: linux-libre@4.9: Update to 4.9.16.

* gnu/packages/linux.scm (linux-libre-4.9): Update to 4.9.16.

gnu: linux-libre@4.4: Update to 4.4.55.

* gnu/packages/linux.scm (linux-libre-4.4): Update to 4.4.55.

services: Remove Tab character from source code whitespace.

* gnu/services/base.scm (file-system-shepherd-service): Remove Tab character
from source code whitespace.

gnu: u-boot: Update to 2017.03.

* gnu/packages/bootloaders.scm (u-boot): Update to 2017.03.

gnu: mesa: Fix another typo.

This is a followup to commit 2a8b89c27fe80a438ad95becb5da8ed4191d6cd4.

* gnu/packages/gl.scm (mesa)[arguments]: Fix typo (galluim -> gallium).

gnu: icecat: Add selected fixes from upstream mozilla-esr45.

* gnu/packages/gnuzilla.scm (icecat)[source][patches]: Add selected fixes from
the upstream mozilla-esr45 repository.

gnu: libevent@2.0: Add fix from upstream.

This fix was cherry-picked by Mozilla from upstream libevent-2.1 to its
bundled copy of libevent-2.0.21 in mozilla-esr45.

* gnu/packages/patches/libevent-2.0-evbuffer-add-use-last-with-datap.patch:
New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/libevent.scm (libevent-2.0)[source][patches]: Add it.

services: file-system-shepherd-service: Make it find the fsck programs.

Fixes <https://bugs.gnu.org/25917>.

* gnu/services/base.scm (file-system-shepherd-service): Use
file-system-packages.

gnu: guile-commonmark: Default to Guile 2.2.

* gnu/packages/guile.scm (guile-commonmark)[inputs]: Replace GUILE-2.0
with GUILE-2.2.
(guile2.0-commonmark): New variable.
(guile2.2-commonmark): Mark as deprecated.
(haunt)[propagated-inputs]: Use GUILE-COMMONMARK.

gnu: guile-reader: Default to Guile 2.2.

* gnu/packages/guile.scm (guile-reader)[inputs]: Change GUILE-2.0 to
GUILE-2.2.
(guile2.0-reader): New variable.
(guile2.2-reader): Mark as deprecated.
(haunt)[propagated-inputs]: Use GUILE-READER instead of
GUILE2.2-READER.