gnu: `expression->derivation-in-linux-vm' export references graphs.

* gnu/system/vm.scm (expression->derivation-in-linux-vm): Add
  #:reference-graphs parameter.  Honor it.  Delete duplicates in
  #:modules argument.

gnu: linux-initrd: Make device nodes for QEMU's hard disk.

* gnu/packages/linux-initrd.scm (qemu-initrd): Make /dev/vda*.

gnu: linux-initrd: Make Guile modules accessible in the chroot.

* gnu/packages/linux-initrd.scm (qemu-initrd): Add (guix build utils) to
  #:modules, and use it.  Copy .scm and .go files to /root.
* guix/build/linux-initrd.scm (bind-mount): New procedure.

gnu: python: Adapt native-search-paths for Python 3.3.

* gnu/packages/python.scm (python): Modify native-search-paths.

gnu: Add Python 3.

*  gnu/packages/python.scm (python-2): Rename from python for version 2.
*  gnu/packages/python.scm (python): New variable for version 3.

gnu: Add yasm.

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

gnu: Add xmlto.

* gnu/packages/xml.scm (xmlto): New variable.

gnu: Add dbus-glib.

* gnu/packages/glib.scm (dbus-glib): New variable.

gnu: pari-gp: Update to 2.5.4.

* gnu/packages/algebra.scm (pari-gp): Update to 2.5.4.

gnu: gsl: Disable numerically unstable test on i686.

* gnu/packages/maths.scm (gsl): Disable test.

gnu: hop: Allow compilation with Bigloo 4.0b.

Fixes <http://bugs.gnu.org/15194>.
Reported by Mark H Weaver <mhw@netris.org>.

* gnu/packages/patches/hop-bigloo-4.0b.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/packages/scheme.scm (hop): Use it.

gnu: gsl: Move from module algebra to maths.

* gnu/packages/algebra.scm (gsl): Move variable from here...
* gnu/packages/maths.scm (gsl): ...to here.

gnu: linux-initrd: Add (guix build linux-initrd) and use it.

* gnu/packages/linux-initrd.scm (qemu-initrd): Add #:modules argument.
  Factorize and move some of the code to...
* guix/build/linux-initrd.scm: ... here.  New file.
* Makefile.am (MODULES): Add it.

gnu: make-bootstrap: Remove the `debug' output from the static Coreutils.

* gnu/packages/make-bootstrap.scm (%static-inputs)[coreutils]: Add
  `outputs' field.

gnu: linux-initrd: Allow Guile modules to be embedded in the initrd.

* gnu/packages/linux-initrd.scm (raw-build-system): New macro.
  (module-package, compiled-module-package): New procedures.
  (expression->initrd): Add `modules' keyword parameter.
  Add "modules" and "modules/compiled" inputs; copy them onto the
  initrd.
* guix/derivations.scm (imported-modules, compiled-modules): Publicize.

gnu: imagemagick: Update to 6.8.6-9.

* gnu/packages/imagemagick.scm (imagemagick): Update to 6.8.6-9.

vm: Use more keyword parameters for `expression->derivation-in-linux-vm'.

* gnu/system/vm.scm (expression->derivation-in-linux-vm): Turn `system'
  and `inputs' into keyword parameters.
  (qemu-image, example1): Adjust accordingly.

gnu: Update python to 2.7.5.

* gnu/packages/python.scm (python): Update to 2.7.5.

derivations: Move 3 positional parameters into keyword parameters.

* guix/derivations.scm (derivation): Turn `system', `env-vars', and
  `inputs' into keyword parameters.
  (build-expression->derivation): Adjust accordingly.
* gnu/packages/bootstrap.scm (%bootstrap-guile): Likewise.
* tests/derivations.scm, tests/store.scm: Likewise.
* doc/guix.texi (Derivations): Likewise.

gnu: Add Guile-Lib.

* gnu/packages/guile.scm (guile-lib): New variable.