gnu: coreutils: Move Perl to 'native-inputs'.

* gnu/packages/base.scm (coreutils): Add 'native-inputs' field.
  This should allow cross builds to have man pages, and work around this
  'dummy-man' bug:
  <http://git.yoctoproject.org/cgit.cgi/poky/plain/meta/recipes-core/coreutils/coreutils-8.22/fix-for-dummy-man-usage.patch>.

Revert "build-system/gnu: Pass --localstatedir=/var --sharedstatedir=/com."

This reverts commit 65529e49ff5b9052544271b1b7923feed4312849.

build-system/gnu: Pass --localstatedir=/var --sharedstatedir=/com.

Suggested by John Darrington <john@darrington.wattle.id.au>
and Mark H Weaver <mhw@netris.org>.

* guix/build/gnu-build-system.scm (configure): Pass --localstatedir=/var
  --sharedstatedir=/com.
* gnu/packages/admin.scm (dmd): Remove 'arguments' field.
* gnu/packages/avahi.scm (avahi): Remove --localstatedir flag.
* gnu/packages/glib.scm (dbus): Likewise.
* gnu/packages/package-management.scm (guix): Likewise.
* gnu/packages/pulseaudio.scm (pulseaudio): Likewise.

gnu: libffi: Leave a copy of headers where libffi.pc expects them.

Suggested by Sree Harsha Totakura <sreeharsha@totakura.in>.

* gnu/packages/libffi.scm (libffi): Symlink header files instead of
  moving them.

tests: Adjust to recent Binutils change.

* tests/guix-package.sh: Refer to 'glibc:debug' instead of
  'binutils:lib' since the latter no longer exists.

Prefer local builds for "small" derivations.

* gnu/system.scm (union, file-union, links): Pass #:local-build? #t to
  'derivation-expression'.
* guix/derivations.scm (imported-files, compiled-modules): Likewise.
* guix/profiles.scm (profile-derivation): Likewise.

Merge branch 'master' into core-updates

derivations: Add #:local-build? parameter for derivations.

* guix/derivations.scm (derivation): Add #:local-build? parameter and
  honor it.
  (build-expression->derivation): Likewise.
* doc/guix.texi (Derivations): Update documentation of these
  procedures.

gnu: fltk: New module

* gnu/packages/fltk.scm: New file
* gnu-system.am: New file fltk.scm

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

gnu: libxft: Propagate input.

* gnu/packages/xorg.scm (libxft): Propagate input libxrender.

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

gnu: ncdu: New module

* gnu/packages/ncdu.scm: New file
* gnu-system.am: New file ncdu.scm

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

gnu: Add Corkscrew 2.0.

* gnu/packages/ssh.scm (corkscrew): New variable.

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

gnu: Add ncdc-1.18.1.

* gnu/packages/dc.scm : New module.
* gnu-system.am (GNU_SYSTEM_MODULES): Add module.

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

profiles: Remove misleading message.

Fixes <http://bugs.gnu.org/16484>.
Reported by Andreas Enge <andreas@enge.fr>.

* guix/profiles.scm (profile-derivation)[builder]: Remove "building
  profile '~a' with ~a packages" message.

doc: More about offloading.

* doc/guix.texi (Daemon Offload Setup): Start with "When desired".  Say
  more on what can go in 'machines.scm', and mention Guile-Avahi.
  (Invoking guix-daemon): Document '--no-build-hook'.
  (Invoking guix build): Add xref to "Daemon Offload Setup".

wget: Upgrade to 1.15.

* gnu/packages/wget.scm (wget): Upgrade to 1.15.  Remove Gettext from
  'inputs'.  Move Perl to 'native-inputs'.

gnu: ffmpeg: Update to 2.1.3.

* gnu/packages/video.scm (ffmpeg): Update to 2.1.3.

gnu: ffmpeg: Add input opus.

* gnu/packages/video.scm (ffmpeg): Add input opus.

Add Sree to 'AUTHORS'.

gnu: Add Opus 1.1.

* gnu/packages/xiph.scm (opus): New variable.

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