gnu: xorg: Shorten commented out packages.

* gnu/packages/xorg.scm: Shorten package definitions that are already
    commented out, keeping only the reason for not including them.

gnu: xorg: Remove non-free font font-bh-ttf/font-luxi-ttf.

* gnu/packages/xorg.scm (font-luxi-ttf): Comment out variable.

gnu: glib: Add `file' as a propagated input.

* gnu/packages/glib.scm (intltool): Add FILE as an input.

gnu: Add exiv2 and Geeqie.

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

gnu: bigloo: Update to 4.0b.

* gnu/packages/scheme.scm (bigloo): Update to 4.0b.  Patch the
  `configure-gc' scripts.  Remove `patch-absolute-file-names' phase.
* gnu/packages/patches/bigloo-gc-shebangs.patch: Adjust to new version.

list-packages: properly specify the size of images.

* build-aux/list-packages.scm (package->sxml, packages->sxml): specify the size
  of images in pixels (see
  http://www.w3.org/TR/html5/embedded-content-0.html#attr-dim-height)

gnu: Add GNU Ocrad.

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

gnu: freefont: Synchronize synopsis.

* gnu/packages/xorg.scm (freefont-ttf): Synchronize synopsis with the
  Womb.

list-packages: Add missing closing </div> after footer include.

* build-aux/list-packages.scm (list-packages): Add missing closing </div>
  after footer include.

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

list-packages: Remove a useless "colspan" attribute.

* build-aux/list-packages.scm (package->sxml): remove a useless "colspan"
  attribute.

list-packages: Add an "alt" attribute for the logos.

* build-aux/list-packages.scm (package->sxml): add an alternative text for the
  logos of the packages.

gnu: Add Shadow.

* gnu/packages/system.scm (shadow): New variable.

gnu: linux-pam: Install headers under $includedir/security.

* gnu/packages/linux.scm (linux-pam): Add `--includedir' configure flag.

gnu: Add GNU Freefont.

* gnu/packages/xorg.scm (freefont-ttf): New variable.

gnu: Remove QEMU-KVM, which is no longer needed.

* gnu/packages/qemu.scm (qemu-kvm): Remove.
  (qemu): Incorporate parts of QEMU-KVM that used to be inherited.
  (qemu-kvm/smb-shares): Rename to...
  (qemu/smb-shares): ... this.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Adjust
  accordingly.

gnu: Add Bitstream Vera.

* gnu/packages/xorg.scm (font-bitstream-vera-ttf): New variable.

gnu: Correct name and description of the Luxi font package.

* gnu/packages/xorg.scm (font-bitstream-type1): Rename to...
  (font-luxi-ttf): ... this.  Change name to "font-luxi-ttf".  Adjust
  synopsis and description.

Make "guix -h" work as "guix --help".

* guix/ui.scm (guix-main): have the same behaviour for the "-h" and "--help"
  options.

list-packages: remove useless "language" attribute of "script" element

See http://www.w3.org/TR/html5-diff/#changed-attributes for more information.

* build-aux/list-packages.html (insert-js): remove "language" attribute, useless for the
  "script" element.

list-packages: remove deprecated "height" attribute on "td" element.

See http://www.w3.org/TR/html5-diff/#obsolete-attributes for more information.

* build-aux/list-packages.html(package-sxml)[description-id]: remove "height"
  attribute for "td" elements.