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

* 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.

* guix/build-system/glib-or-gtk.scm, guix/build/glib-or-gtk-build-system.scm:
  New files.
* Makefile.am (MODULES): Add them.

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

* guix/derivations.scm (graft-derivation): New procedure.
* guix/build/graft.scm: New file.
* Makefile.am (MODULES): Add it.
* tests/derivations.scm ("graft-derivation"): New test.

* guix/scripts/lint.scm (check-start-with-package-name): New method.
* tests/lint.scm ("synopsis: start with package name"): New test.

* guix/scripts/lint.scm (check-start-article): use "string-ci=?" instead of
  "string=?".
* tests/lint.scm ("synopsis: starts with 'a'",
  "synopsis: starts with 'an'"): New tests.

* guix/scripts/lint.scm (check-description-style,
  check-synopsis-start-upper-case): New methods.
* tests/lint.scm ("description: does not start with an upper-case letter",
  "synopsis: does not start with an upper-case letter"): New tests.

* guix/scripts/lint.scm (check-synopsis-length): New procedure.
* tests/lint.scm ("synopsis: too long"): New test.

* guix/lint (check-patches): Test the output of origin-patches.

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

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

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

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

* gnu/services/networking.scm (%facebook-host-aliases): New variable.
* doc/guix.texi (Networking Services): Document it.

* gnu/system.scm (local-host-aliases): New procedure.
  (default-/etc/hosts): Use it.

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

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

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

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

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

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

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

* 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.

* emacs/guix-main.scm (process-package-actions): Use 'with-store'.

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

* guix/packages.scm (%supported-systems): New variable.
  (<package>)[platforms]: Rename to...
  [supported-systems]: ... this.  Change default to %SUPPORTED-SYSTEMS.
* build-aux/hydra/gnu-system.scm (job-name, package->job): New
  procedures, formerly in 'hydra-jobs'.  Honor 'package-supported-systems'.
  (hydra-jobs): Use them.

* README (Requirements): Add Guile-JSON.
* doc/guix.texi (Requirements): Likewise.

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

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

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

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

* gnu/packages/patches/xpdf-constchar.patch: Remove.
* gnu-system.am (dist_patch_DATA): Remove it.
* gnu/packages/pdf.scm (xpdf): Update to 3.04.  Remove patch.
  Add libpng as an input.

* guix/build-system/trivial.scm (lower): Initialize the 'target' field.

* gnu/packages/glib.scm (dbus): Move PKG-CONFIG to 'native-inputs'.

* gnu/packages/glib.scm (dbus)[arguments]: Add 'post-install' phase.

* gnu/packages/glib.scm (dbus): Update to 1.8.8.

* doc/emacs.texi (emacs List buffer): Mention new key bindings.
* emacs/guix-base.el (guix-delete-generations): New procedure.
* emacs/guix-info.el (guix-generation-info-insert-number): Use it.
* emacs/guix-list.el (guix-generation-list-mark-delete,
  guix-generation-list-execute): New procedures.
* emacs/guix-main.scm (delete-generations*): New procedure.

* guix/build-system.scm (<bag>)[system, target]: New fields.
  (make-bag): Add #:system parameter and pass it to LOWER.
* gnu/packages/bootstrap.scm (make-raw-bag): Initialize 'system' field.
* guix/build-system/cmake.scm (lower): Likewise.
* guix/build-system/perl.scm (lower): Likewise.
* guix/build-system/python.scm (lower): Likewise.
* guix/build-system/ruby.scm (lower): Likewise.
* guix/build-system/trivial.scm (lower): Likewise.
* guix/build-system/gnu.scm (lower): Initialize 'system' and 'target'
  fields.
* guix/packages.scm (bag->derivation, bag->cross-derivation): New
  procedures.
  (package-derivation, package-cross-derivation): Use 'bag->derivation'.
* tests/packages.scm ("search paths"): Initialize 'system' and 'target'
  fields.
  ("package->bag", "package->bag, cross-compilation", "bag->derivation",
  "bag->derivation, cross-compilation"): New tests.

* gnu/packages/cross-base.scm (cross-gcc-arguments): Parametrize
  %CURRENT-TARGET-SYSTEM.
* tests/monads.scm ("package-file + package->cross-derivation"): Replace
  "foo64-gnu" with "mips64el-linux-gnu".