Add (gnu system install).

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

gnu: Make gtk-glext depend on pangox-compat and remove workaround patch

* gnu/packages/gnome.scm (gtk-glext): Add new dependency and remove patch
* gnu/packages/patches/gtkglext-remove-pangox-dependency.patch: Delete file
* gnu-system.am: Delete gnu/packages/patches/gtkglext-remove-pangox-dependency.patch

gnu: Add cssc.

* gnu/packages/version-control.scm (cssc): New variable.
* gnu/packages/patches/cssc-gets-undeclared.patch: New file
* gnu/packages/patches/cssc-missing-include.patch: New file
* gnu-system.am: Add gnu/packages/patches/cssc-gets-undeclared.patch
  and gnu/packages/patches/cssc-missing-include.patch

gnu: Add duplicity.

* gnu/packages/backup.scm: New file.
* gnu-system.am: Add it.

services: Add D-Bus and Avahi.

* gnu/services/dbus.scm: New file.
* gnu/services/avahi.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add them.

gnu: Add Transmission.

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

gnu: Add mcrypt, libmcrypt, and libmhash.

* gnu/packages/mcrypt.scm: New file.
* gnu/packages/patches/mhash-keygen-test-segfault.patch: New patch.
* gnu-system.am (GNU_SYSTEM_MODULES): Add file.
  (dist_patch_DATA): Add patch.

Add (gnu) module.

* gnu.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.
* build-aux/hydra/demo-os.scm: Use (gnu) and strip import list
  accordingly.
* doc/guix.texi (Using the Configuration System): Adjust example
  accordingly.

Add (gnu system file-systems).

This fixes a circular dependency between (gnu system) and (gnu system
linux-initrd), where the latter could end up being compiled before
'file-system-type' was defined as a macro.

* gnu/system.scm (<file-system>, %fuse-control-file-system,
  %binary-format-file-system): Move to...
* gnu/system/file-systems.scm: ... here.  New file.
* build-aux/hydra/demo-os.scm, gnu/system/linux-initrd.scm,
  gnu/system/vm.scm: Use it.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

gnu: Add ccache.

* gnu/packages/ccache.scm: New file.
* gnu/packages/patches/ccache-stdc-predef-test.patch: New patch.
* gnu-system.am (GNU_SYSTEM_MODULES): Add ccache.scm.
  (dist_patch_DATA): Add patch.

gnu: Add superlu-dist package.

* gnu/packages/maths.scm (superlu-dist): New variable.
* gnu/packages/patches/superlu-dist-scotchmetis.patch: New patch.
* gnu-system.am (dist_patch_DATA): Add it.

gnu: Add scotch package.

* gnu/packages/maths.scm (scotch): New variable.
* gnu/packages/patches/scotch-test-threading.patch: New patch.
* gnu-system.am (dist_patch_DATA): Add it.

gnu: Add babl.

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

gnu: perl-tk: Patch for i686

* gnu/packages/patches/perl-tk-x11-discover.patch: New patch.
* gnu-system.am [dist_patch_DATA]: Add it.
* gnu/packages/tcl.scm (perl-tk)[origin]: Use it.

gnu: Add pciutils.

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

gnu: Add OpenMPI

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

gnu: pybugz: Add fixlet patches.

* gnu/packages/python.scm (python2-pybugz)[source]: Add 'patches'
  field.
* gnu/packages/patches/pybugz-encode-error.patch,
  gnu/packages/patches/pybugz-stty.patch: New files.
* gnu-system.am (dist_patch_DATA): Add them.

gnu: Add petsc

* gnu/packages/maths.scm (petsc): New variable.
  (petsc-complex): New variable.
* gnu/packages/patches/petsc-fix-threadcomm.patch: New patch.
* gnu-system.am (dist_patch_DATA): Add it.

gnu: soprano: Add input clucene.

* gnu/packages/rdf.scm (soprano): Add input clucene and patch the cmake
    file looking for it.
* gnu/packages/patches/soprano-find-clucene.patch: New file.
* gnu-system.am (dist_patch_DATA): Register the patch.

gnu: Add doxygen.

* gnu/packages/doxygen.scm: New file.
* gnu/packages/patches/doxygen-test.patch,
  gnu/packages/patches/doxygen-tmake.patch: New files.
* gnu-system.am (GNU_SYSTEM_MODULES, dist_patch_DATA): Register the new files.