gnu: tzdata: Update to 2015c.

* gnu/packages/base.scm (tzdata): Update to 2015c.

gnu: glibc: Add dependency on Gettext, to install the message catalogs.

This fixes a bug whereby the libc.mo files were not installed, and thus
translations of libc's messages were not available.

* gnu/packages/commencement.scm (gettext-boot0): New variable.
  (glibc-final)[native-inputs]: New field.
* gnu/packages/base.scm (glibc)[native-inputs]: Add GNU-GETTEXT.

Merge branch 'core-updates'

gnu: Change ld-wrapper extension from .scm to .in.

* gnu/packages/ld-wrapper.scm: Rename to...
* gnu/packages/ld-wrapper.in: ... this.
* gnu/packages/base.scm (make-ld-wrapper): Adjust "wrapper" input
  accordingly.
* gnu-system.am (GNU_SYSTEM_MODULES): Remove ld-wrapper.scm.
  (MISC_DISTRO_FILES): New variable.

gnu: cross-base: Use an 'ld' wrapper also when cross-compiling.

* gnu/packages/base.scm (make-ld-wrapper): Add #:target parameter and
  honor it.
* gnu/packages/cross-base.scm (cross-gcc-arguments)[#:phases]
  <make-cross-binutils-visible>: Refer to the ld wrapper.
  (cross-gcc)[native-inputs]: Add "ld-wrapper-cross".

gnu: ld-wrapper: Use a hard-coded self-reference instead of $0.

* gnu/packages/ld-wrapper.scm: Use @SELF@ instead of $0.  This is so
  that the .go file is found even when the wrapper is invoked via a
  symlink to it.
* gnu/packages/base.scm (make-ld-wrapper): Substitute @SELF@.

gnu: Add 'make-ld-wrapper' procedure.

* gnu/packages/base.scm (make-ld-wrapper): New procedure.  Abstracted
  from...
* gnu/packages/commencement.scm (ld-wrapper-boot3): ... here.  Use it.

build-system/gnu: Add 'validate-runpath' phase.

* guix/build/gnu-build-system.scm (every*, validate-runpath): New
  procedures.
  (%standard-phases): Add 'validate-runpath'.
* guix/build-system/gnu.scm (%gnu-build-system-modules): Add (guix build
  gremlin) and (guix elf).
  (gnu-build): Add #:validate-runpath?.
  [builder]: Pass it.
  (gnu-cross-build): Likewise.
* gnu/packages/base.scm (glibc)[arguments]: Add #:validate-runpath? #f.

gnu: tzdata: Update to 2015b.

* gnu/packages/base.scm (tzdata): Update to 2015b.

Revert "gnu: tzdata: Update to 2015b."

This reverts commit 41fd23334d9932c978579576fd86c5f89894c015.

gnu: tzdata: Update to 2015b.

* gnu/packages/base.scm (tzdata): Update to 2015b.

gnu: glibc: Fix cross-compilation regression.

Fixes a regression introduced in 12b0dbd.
See <http://lists.gnu.org/archive/html/guix-devel/2015-03/msg00698.html>.

* gnu/packages/base.scm (glibc)[arguments] <pre-configure>: Add
  #:native-inputs parameter.  Look up "static-bash" first in INPUTS,
  then in NATIVE-INPUTS.

Merge branch 'master' into core-updates

gnu: patch: Update to 2.7.5.

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

Revert "gnu: patch: Update to 2.7.5."

This reverts commit cded001198d60d151935134e85733ca453d72066.

gnu: patch: Update to 2.7.5.

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

gnu: glibc: Comment on the parallel build race.

* gnu/packages/base.scm (glibc): Augment comment regarding sequential
  builds.

gnu: Move 'which' to (gnu packages base).

* gnu/packages/which.scm: Remove.
* gnu-system.am (GNU_SYSTEM_MODULES): Remove it.
* gnu/packages/base.scm (which): New variable.
* gnu/packages/aspell.scm, gnu/packages/audio.scm,
  gnu/packages/autogen.scm, gnu/packages/cdrom.scm,
  gnu/packages/compression.scm, gnu/packages/datamash.scm,
  gnu/packages/games.scm, gnu/packages/glib.scm,
  gnu/packages/gnu-pw-mgr.scm, gnu/packages/gnutls.scm,
  gnu/packages/gps.scm, gnu/packages/guile.scm,
  gnu/packages/java.scm, gnu/packages/libevent.scm,
  gnu/packages/linux.scm, gnu/packages/lisp.scm,
  gnu/packages/node.scm, gnu/packages/ntp.scm,
  gnu/packages/orpheus.scm, gnu/packages/pciutils.scm,
  gnu/packages/python.scm, gnu/packages/qt.scm,
  gnu/packages/rsync.scm, gnu/packages/sawfish.scm,
  gnu/packages/scheme.scm, gnu/packages/ssh.scm,
  gnu/packages/statistics.scm, gnu/packages/texlive.scm,
  gnu/packages/wdiff.scm: Adjust accordingly.

Merge branch 'core-updates'.

Merge branch 'master' into core-updates