gnu: guix: Upgrade to 0.6.

* gnu/packages/package-management.scm (guix): Upgrade to 0.6.
* gnu/services/dmd.scm (dmd-configuration-file): Change /var/nix to
  /var/guix.
* gnu/system/vm.scm (operating-system-default-contents): Likewise.

gnu: qemu: Upgrade to 1.7.1; add virtfs support.

* gnu/packages/qemu.scm (qemu-headless): Upgrade to 1.7.1.
  [source]: Remove 'patches' field.
  [arguments]: Add --enable-virtfs configure flag.
  [inputs]: Add libcap and attr.
* gnu/packages/patches/qemu-make-4.0.patch: Remove.
* gnu-system.am (dist_patch_DATA): Adjust accordingly.

gnu: lapack: Augment library rpath

* gnu/packages/maths.scm (lapack) [arguments]: New post-installation
  phase to augment the rpath of installed libraries.

gnu: Move help2man package to (gnu packages man) module.

* gnu/packages/man.scm (help2man): New variable.
* gnu/packages/help2man.scm: Delete it.
* gnu/packages/cdrom.scm: Import (gnu packages man).
* gnu/packages/zile.scm: Import (gnu packages man).
* gnu-system.am (GNU_SYSTEM_MODULES): Delete 'gnu/packages/help2man.scm'.

gnu: Add man-db.

* gnu/packages.man.scm (man-db): New variable.

gnu: Add libpipeline.

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

gnu: dvdisaster: Build sequentially.

* gnu/packages/cdrom.scm (dvdisaster)[arguments]: Add #:parallel-build? #f.

gnu: openssl: Upgrade to 1.0.1g (CVE-2014-0160).

* gnu/packages/openssl.scm (openssl): Upgrade to 1.0.1g (for
  CVE-2014-0160, <http://www.openssl.org/news/secadv_20140407.txt>.)

gnu: Add patchutils and quilt

* gnu/packages/patchutils.scm: New file
* gnu/packages/patches/patchutils-xfail-gendiff-tests.patch: New patch
* gnu-system.am (GNU_SYSTEM_MODULES): Add patchutils.
  (dist_patch_DATA): Add patch.

gnu: Python: disable failing tests on MIPS64.

* gnu/packages/patches/python-fix-tests.patch: disable two failing tests on
  MIPS64.

gnu: python: Apply mips n32 fix to bundled libffi.

* gnu/packages/patches/python-libffi-mips-n32-fix.patch: New file.
* gnu/packages/python.scm (python-2, python): Add it.
* gnu-system.am (dist_patch_DATA): Add it.

gnu: linux-libre: Upgrade to 3.13.7.

* gnu/packages/linux.scm (linux-libre): Update to 3.13.7.

gnu: python: Upgrade to 3.3.5.

* gnu/packages/python.scm (python): Upgrade to 3.3.5.

gnu: Python: disable test_wait_result() as it fails on some setups

* gnu/packages/patches/python-fix-tests.patch: disable a failing test.

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

gnu: lapack: Build shared libraries

* gnu/packages/maths.scm (lapack) [arguments]: Add -DBUILD_SHARED_LIBS to
  #:configure-flags

gnu: fltk: Build shared libraries

* gnu/packages/fltk.scm (fltk) [arguments]: Add to --enable-shared to
  #:configure-flags

gnu: shadow: Make source file timestamps deterministic.

* gnu/packages/admin.scm (shadow)[arguments]: Add 'reset-timestamps'
  phase.

scheme/bigloo: Fix package description to reflect actual situation

* gnu/packages/scheme.scm (bigloo): Description: Remove the part about the C#
  connection which has been removed since release 3.8a.

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

Add missing space between funcall and string argument

* gnu/packages/scheme.scm (hop): Add missing space.

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

gnu: icecat: Remove duplicated line.

* gnu/packages/gnuzilla.scm (icecat): Remove duplicate PYTHON-2 input,
  and extraneous 'native-inputs' field.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>