gnu: openjpeg: Fix CVE-2017-14151, CVE-2017-14152.

* gnu/packages/image.scm (openjpeg)[source]: Add patches.
* gnu/packages/patches/openjpeg-CVE-2017-14151.patch,
gnu/packages/patches/openjpeg-CVE-2017-14152.patch: New files.
* gnu/local.mk (dist_patch_DATA): Register them.

gnu: csound: Update to 6.09.1.

* gnu/packages/audio.scm (csound): Update to 6.09.1.  Change source URI.
* gnu/packages/patches/csound-header-ordering.patch: Remove patch.
* gnu/local.mk (dist_patch_DATA): Remove reference to patch above.

gnu: Update calibre to 3.6.0.

* gnu/local.mk: Remove calibre-drop-unrar.patch
* gnu/packages/ebook.scm (calibre): Update to 3.6.0.
  Add python-html5-parser input.
* gnu/packages/patches/calibre-drop-unrar.patch: Remove file.

gnu: Add python-html5-parser, python2-html5-parser.

* gnu/packages/python.scm (python-html5-parser): New variable.
  (python2-html5-parser: New variable.

gnu: Update python-lxml to 3.8.0.

* gnu/packages/python.scm (python-lxml): Update to 3.8.0.

gnu: Add emacs-go-mode.

* gnu/packages/emacs.scm (emacs-go-mode): New variable.

gnu: mutter: Add missing input.

* gnu/packages/gnome.scm (mutter)[inputs]: Add libcap.

gnu: mutter: Only propagate glib once.

* gnu/packages/gnome.scm (mutter)[propagated-inputs]: Remove duplicate
glib.

gnu: gnome-session: Add missing input.

* gnu/packages/gnome.scm (gnome-settings)[inputs]: Add libcap.

gnu: polkit: Add missing input.

* gnu/packages/polkit.scm (polkit)[inputs]: Add libcap.

gnu: weston: Add missing input.

* gnu/packages/freedesktop.scm (weston)[inputs]: Add libcap.

gnu: kmscon: Add missing input.

* gnu/packages/terminals.scm (kmscon)[inputs]: Add libcap.

tests: Add test for installing from an ISO Image.

* gnu/tests/install.scm (%test-iso-image-installer): New variable.
  (run-install): Add #:installation-disk-image-file-system-type as a keyword
  argument.

vm: Call iso9660-image with #:register-closures? as #t.

* gnu/system/vm.scm (system-disk-image): Call iso9660-image with
  #:register-closures? as #t.

vm: Add support for registering closures to iso9660-image.

* gnu/system/vm.scm (iso9660-image): Add support for registering closures.

vm: Create /mnt in the generated ISO image in make-iso9660-image.

This is used in the installation process, as the mountpoint for the target
filesystem.

* gnu/build/vm.scm (make-iso9660-image): Create /mnt within the generated ISO
  image.

vm: Add support for registering closures to make-iso9660-image.

This mimics the functionality in the root-partition-initializer used in
creating the QEMU image. This helps when trying to run guix system init from
the generated ISO image.

* gnu/build/vm.scm (make-iso9660-image): Add support for registering closures.

gnu: file: Fix CVE-2017-1000249.

* gnu/packages/file.scm (file)[replacement]: New field.
(file/fixed): New variable.
* gnu/packages/commencement.scm (file-boot0): Use package/inherit.
* gnu/packages/patches/file-CVE-2017-1000249.patch.
* gnu/local.mk (dist_patch_DATA): Register it.

gnu: ruby-coderay: Update to 1.1.2.

* gnu/packages/ruby.scm (ruby-coderay): Update to 1.1.2.

gnu: nginx: Enable HTTP/2.0 (ngx_http_v2_module).

* gnu/packages/web.scm (nginx)[arguments]: Add ‘--with-http_v2_module’ flag.