gnu: cmake: Use our curl, zlib, expat, bzip2, and libarchive.

* gnu/packages/cmake.scm (cmake)[arguments]: Move sh-patching to new
  'patch-bin-sh phase.  New 'set-paths phase.
  [inputs]: Add curl, zlib, expat, bzip2, and libarchive.
  [description]: Fix space after end-of-sentence.

gnu: slim: Fix typo in synopsis and wrap description.

* gnu/packages/slim.scm (slim)[synopsis]: Fix typo.
  [description]: Fix two-space-after-end-of-sentence.  Wrap to 80
  characters.

gnu: conkeror: install conkeror-spawn-helper.

* gnu/packages/conkeror.scm (conkeror)[build-system]: Change to
  gnu-build-system.  Adjust arguments accordingly.
  [inputs]: Remove now-implicit bash.
  [native-inputs]: Remove now-implicit tar and gzip.
  [description]: Fix two-space-after-end-of-sentence.  Remove comment
  about separate conkeror-spawn-process-helper package.

gnu: Add fontforge.

* gnu/packages/fontutils.scm (fontforge): New variable.

gnu: Add libuninameslist.

* gnu/packages/fontutils.scm (libuninameslist): New variable.

gnu: Add libspiro.

* gnu/packages/fontutils.scm (libspiro): New variable.

gnu: Add potrace.

* gnu/packages/fontutils.scm (potrace): New variable.

gnu: boost: Add zlib to the inputs.

* gnu/packages/boost.scm (boost): Add zlib to inputs.

gnu: eudev: Really update to 1.10.

* gnu/packages/linux.scm (eudev)[version]: Fix typo.
  [source]: Add 'snippet'.

gnu: mupdf: Update to 1.6.

* gnu/packages/pdf.scm (mupdf): Update to 1.6.

gnu: mupdf: Use a source URL where older versions remain available.

* gnu/packages/pdf.scm (mupdf)[source]: Download from the archive
  subdirectory, where both old and new versions are kept.

gnu: eudev: Update to 1.10.

* gnu/packages/linux.scm (eudev): Update to version 1.10.

gnu: clucene: Enable the contrib-libs.

* gnu/packages/rdf.scm (clucene): Enable the contribs-lib directory.

gnu: libxdamage: Move inputs to propagated-inputs

* gnu/packages/xorg.scm (libxdamage): Move all existing inputs
  to propagated-inputs.

gnu: net-tools: Allow compilation with current libc and GCC.

* gnu/packages/patches/net-tools-bitrot.patch: New file.
* gnu/packages/linux.scm (net-tools): Use it.
* gnu-system.am (dist_patch_DATA): Add it.

gnu: mit-scheme: Restrict to non-MIPS systems.

* gnu/packages/scheme.scm (mit-scheme)[supported-systems]: New field.

gnu: linux-libre: Update to 3.17.

* gnu/packages/linux.scm (linux-libre): Update to version 3.17.

gnu: Add feh.

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

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

gnu: libdaemon: Add alternate source URLs.

Fixes <http://bugs.gnu.org/18639>.
Reported by Mark H Weaver <mhw@netris.org>.

* gnu/packages/libdaemon.scm (libdaemon)[source]: Add Debian and Fedora
  mirrors.

gnu: linux-libre: Update to 3.16.4.

* gnu/packages/linux.scm (libogg): Update to version 3.16.4.