gnu: libpng: Upgrade to 1.5.17.

* gnu/packages/libpng.scm (libpng): Upgrade to 1.5.17.

Merge branch 'core-updates'

gnu: gettext: Upgrade to 0.18.3.

* gnu/packages/gettext.scm (gettext): Upgrade to 0.18.3.
  Remove patch.  Change `patch-tests' phase to use (which "sh'); keep it
  regardless of whether we're cross compiling.

gnu: tzdata: Upgrade to 2013d.

* gnu/packages/base.scm (tzdata): Upgrade to 2013d.

gnu: gcc: Add Texinfo to the native inputs.

* gnu/packages/gcc.scm (gcc-4.7): Add `native-inputs' field.
  (gcc-4.8): Remove outdated comment.
* gnu/packages/base.scm (gcc-boot0): Add `native-inputs' field.

gnu: make-bootstrap: guile-static-stripped has no "debug" output.

* gnu/packages/make-bootstrap.scm (%guile-static-stripped): Add
  `outputs' field.

build-system/gnu: Remove the "debug" output when `strip-binaries?' is #f.

* guix/build-system/gnu.scm (gnu-build, gnu-cross-build): Delete "debug"
  from OUTPUTS when STRIP-BINARIES? is false.
* gnu/packages/cross-base.scm (cross-libc): Leave `outputs' unchanged.
  This reverts commit a4627d4.

gnu: cross-libc: Remove the "debug" output.

* gnu/packages/cross-base.scm (cross-libc): Remove "debug" from the
  `outputs' field.

gnu: Add a "debug" output for some packages.

* gnu/packages/base.scm (coreutils, gnu-make, glibc): Add a "debug" output.
* gnu/packages/bdw-gc.scm (libgc): Likewise.
* gnu/packages/guile.scm (guile-2.0): Likewise.
* gnu/packages/libffi.scm (libffi): Likewise.
* gnu/packages/multiprecision.scm (gmp, mpfr, mpc): Likewise.

gnu: Add noweb.

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

gnu: qemu: Upgrade to 1.5.1.

* gnu/packages/qemu.scm (qemu-kvm): Add `--cc' configure option.
  Add PIXMAN and ALSA-LIB as inputs.
  (qemu): Upgrade to 1.5.1  Remove autotool hack for pixman.  Patch
  tests/libqtest.c.  Remove Autoconf, Automake, and Libtool from the
  inputs.  Fix `home-page'.

gnu: liboop: Fix & improve meta-data.

* gnu/packages/lsh.scm (liboop): Fix home page.  Improve `synopsis' and
  `description'.  Thanks to carl hansen <carlhansen1234@gmail.com>, who
  raised it on bug-gsrc@gnu.org.

gnu: Add GNU vc-dwim.

* gnu/packages/version-control.scm (vc-dwim): New variable.

gnu: Add GNU Rush.

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

gnutls: fix the test-suite for 32 bits systems.

* gnu/packages/patches/gnutls-fix-tests-on-32-bits-system.patch: New file.
* gnu-system.am: Add it here...
* gnu/packages/gnutls.scm (gnutls): ... and use it here.

Thanks to Nikos Mavrogiannopoulos for providing this patch:
http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/6778

gnu: lout: Upgrade to 3.40.

* gnu/packages/lout.scm (lout): Upgrade to 3.40.

gnu: lsh: Upgrade to 2.1.

* gnu/packages/lsh.scm (lsh): Upgrade to 2.1.  Add Nettle as an input.
  Remove now unneeded patches.
* gnu/packages/patches/lsh-guile-compat.patch,
  gnu/packages/patches/lsh-no-root-login.patch,
  gnu/packages/patches/lsh-pam-service-name.patch: Remove.
* gnu-system.am (dist_patch_DATA): Remove them.

gnu: gcc: Use `gcc-configure-flags-for-triplet' when cross-compiling GCC.

* gnu/packages/cross-base.scm (gcc-configure-flags-for-triplet): Move to...
* gnu/packages/gcc.scm (gcc-configure-flags-for-triplet): ... here.  New
  procedure.
  (gcc-4.7): Use it when (%current-target-system) is true.

gnu: cross-base: Add support for `mips64el-linux-gnu-gnuabi64' (N64 ABI).

* gnu/packages/cross-base.scm (gcc-configure-flags-for-triplet): New
  procedure.
  (cross-gcc): Use it.
  (xgcc-mips64el): Use *-gnuabi64 instead of the N32 ABI.

gnu: make-bootstrap: Fix cross compilation of binutils-static.

* gnu/packages/make-bootstrap.scm (%binutils-static): Inherit configure
  flags from BINUTILS.