gnu: ffmpeg: Move flags into their own argument.

* gnu/packages/video.scm (ffmpeg)[arguments]: Move the configurable
  configure flag literals into the configure-flags argument. Call
  configure with these flags from the configure phase.

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

gnu: Add libchop.

* gnu/packages/backup.scm (libchop): New variable.

gnu: Move gdbm to (gnu packages databases).

* gnu/packages/gdbm.scm: Remove.
* gnu/packages/databases.scm (gdbm): New variable, from gdbm.scm.
* gnu/packages/avahi.scm, gnu/packages/cyrus-sasl.scm,
  gnu/packages/guile.scm, gnu/packages/mail.scm,
  gnu/packages/man.scm, gnu/packages/pulseaudio.scm,
  gnu/packages/python.scm, gnu/packages/ruby.scm,
  gnu/packages/sawfish.scm: Adjust accordingly.
* gnu-system.am (GNU_SYSTEM_MODULES): Remove gdbm.scm.

gnu: openblas: Update to 0.2.15.

* gnu/packages/maths.scm (openblas): Update to 0.2.15.

gnu: icedtea7: Update to 2.6.2.

* gnu/packages/java.scm (icedtea7): Update to 2.6.2.

gnu: ghc-glut: Propagate freeglut input.

* gnu/packages/haskell.scm (ghc-glut): Move freeglut to
  propagated-inputs.

gnu: bluez: Update to 5.35.

* gnu/packages/linux.scm (bluez): Update to 5.35.

gnu: magit-svn: Update to 2.1.1.

* gnu/packages/emacs.scm (magit-svn): Update to 2.1.1.

gnu: magit: Update to 2.3.0.

* gnu/packages/emacs.scm (magit): Update to 2.3.0.

gnu: pbtranscript-tofu: Update to 2.2.3.

* gnu/packages/bioinformatics.scm (pbtranscript-tofu): Update to 2.2.3.
  [source]: Remove bundled Cython sources in a snippet.  Replace
  ".tar.gz" extension in file-name field with "-checkout".
  [arguments]: Replace "enter-directory-and-clean-up" phase with
  "enter-directory" phase, and add "patch-setuppy" phase.
  [inputs]: Add python2-h5py.  Move python2-cython ...
  [native-inputs]: ... to this field.

gnu: pari-gp: Add X11 input.

* gnu/packages/algebra.scm (pari-gp)[inputs]: Add libx11, which enables
  plotting functions.

gnu: python-debian: Avoid @itemize in description.

* gnu/packages/python.scm (python-debian): Use @enumerate instead of
  @itemize.

gnu: grub: Install documentation.

* gnu/packages/grub.scm (grub)[native-inputs]: Add help2man and texinfo.

gnu: grub: Use modify-phases and other minor cleanups.

* gnu/packages/grub.scm (grub)[arguments]: Use modify-phases.  Return #t from
  'patch-stuff' phase.  Add 'patch-stuff' phase after 'unpack' instead of
  before 'patch-source-shebangs'.
  [inputs]: Add comment noting that 'fuse' would be a desirable input.

gnu: linux-libre: On MIPS, the linux image name is vmlinuz, not bzImage.

* gnu/packages/linux.scm (linux-libre)[install-phase]: Add vmlinuz to the list
  of file names to be copied.

gnu: linux-libre: Add case for ARCH=mips.

* gnu/packages/linux.scm (linux-libre)[build-phase]: When setting ARCH, add a
  case for MIPS.

gnu: linux-libre: Add 'supported-systems' field: Intel only for now.

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

gnu: linux-libre: Update to 4.2.5.

* gnu/packages/linux.scm (linux-libre): Update to 4.2.5.

gnu: Add Diffoscope.

* gnu/packages/package-management.scm (diffoscope): New variable.

gnu: Add python-chardet.

* gnu/packages/python.scm (python-chardet, python2-chardet): New
  variables.