hydra: Hard-code target systems.

* build-aux/hydra/gnu-system.scm (hydra-jobs)[systems]: Define locally,
  independently of ARGUMENTS.  This matches the new Hydra convention,
  where using a 'system' input is deprecated.

gnu: remove python-fix-dbm.patch

* gnu/packages/patches/python-fix-dbm.patch: remove file. It is not needed
  anymore, and is probably a left-over of a failed merge.
* gnu-system.am: remove gnu/packages/patches/python-fix-dbm.patch

gnu: Enable tests in Python 3.

* gnu/packages/python.scm: enable tests for Python 3
* gnu/packages/python-fix-tests.patch: New file.
* gnu/packages/gnu-system.am (dist_patch_DATA): add it.

gnu: Python: use /nix/.../sh instead of /bin/sh in the subprocess module

* gnu/packages/python.scm (python-2): patch Lib/subprocess.py to use
  /nix/.../sh.

gnu: Enable the 'ctypes' module in Python.

* gnu/packages/python.scm (python-2): add libffi to the inputs and use it to
  build the ctypes module.

hydra: Fix typo in core package list.

* build-aux/hydra/gnu-system.scm: Use (gnu packages gcc).
  (%core-packages): Remove nonexistent 'gcc'; add GCC-4.8 and GCC-4.7.

hydra: Remove cross-builds from i686-linux to mips64el-linux-gnuabi64.

* build-aux/hydra/gnu-system.scm (hydra-jobs)[cross-jobs]: Define
  'from-32-to-64?'.  Filter out %CROSS-TARGETS that match.

hydra: Build GCC and glibc, not their '-final' variant.

* build-aux/hydra/gnu-system.scm (%core-packages): Replace GCC-FINAL and
  GLIBC-FINAL with GCC and GLIBC.

gnu: glibc: Patch mtrace.pl to avoid retaining a reference to Perl.

* gnu/packages/base.scm (glibc)[argument] <pre-configure phase>: Patch
  malloc/mtrace.pl.

Merge branch 'master' into core-updates

gnu: guile: Upgrade to 2.0.11.

* gnu/packages/guile.scm (guile): Upgrade to 2.0.11.

gnu: cmake: Install man pages and docs in share/{man,doc}.

* gnu/packages/cmake.scm (cmake): Pass --mandir and --docdir to configure.
  Rewrite the code that selects the first two components of the version.

gnu: flac: Install man pages in share/man.

* gnu/packages/xiph.scm (flac): Add --mandir configure flag.

gnu: libvorbis: disable parallel tests

* gnu/packages/xiph.scm (libvorbis): disable parallel tests

gnu: openssh: Upgrade to 6.6p1.

* gnu/packages/ssh.scm (openssh): Upgrade to 6.6p1.

daemon: Really override the substituters setting.

Reported by Andreas Enge <andreas@enge.fr>:
<https://lists.gnu.org/archive/html/guix-devel/2014-03/msg00211.html>.

* nix/nix-daemon/guix-daemon.cc (main): Set the 'NIX_SUBSTITUTERS'
  env. var.  Leave 'settings.substituters' unchanged.

pk-crypto: Don't use Ed25519 when libgcrypt is older than 1.6.0.

* guix/pk-crypto.scm (gcrypt-version): New procedure.
* guix/scripts/archive.scm (%key-generation-parameters): New variable.
  (%options) <generate-key>: Use it.
* tests/pk-crypto.scm ("sign + verify, Ed25519"): Skip if using gcrypt < 1.6.0.

gnu: tzdata: Upgrade to 2014a.

gnu: lynx: Upgrade to 2.8.8rel.2.

* gnu/packages/lynx.scm (lynx): Upgrade to 2.8.8rel.2.

gnu: util-macros: Install .pc file in lib/pkgconfig; remove INSTALL file.

* gnu/packages/xorg.scm (util-macros): Substitute "$(libdir)/pkgconfig"
  for "$(datadir)/pkgconfig" in Makefile.in.  After install, remove
  share/util-macros/INSTALL and share/util-macros.