Merge branch 'core-updates'

Conflicts:
	gnu/packages/bootstrap.scm

gnu: libtool: Skip nopic test on ARM and MIPS systems.

* gnu/packages/patches/libtool-skip-tests.patch: Skip nopic test on ARM and
  MIPS systems.

gnu: libtool: Update to 2.4.4.

* gnu/packages/patches/libtool-2.4-skip-tests.patch: Rename to...
* gnu/packages/patches/libtool-skip-tests.patch: ... this.
* gnu/packages/patches/libtool-skip-tests-for-mips.patch: Remove.
* gnu-system.am (dist_patch_DATA): Adjust accordingly.
* gnu/packages/autotools.scm (libtool): Update to 2.4.4.
  (libtool-2.4.4): Remove.

distro: Change the module name space to (gnu ...).

* distro: Rename to...
* gnu: ... this.  Update module names accordingly.
* Makefile.am: Adjust accordingly.
* po/POTFILES.in: Likewise.
* distro.scm: Search for files under /gnu/packages instead of
  /distro/packages.
* gnu/packages/base.scm (ld-wrapper-boot3): Likewise.

build: Move `distro/patches' to `distro/packages/patches'.

* distro/patches: Move directory to...
* distro/packages/patches: ... here.
* Makefile.am (dist_patch_DATA): Adjust accordingly.
* pre-inst-env.in (DISTRO_PATCH_DIRECTORY): Likewise.

distro: gcc: Patch `lib' spec to add `-rpath' for each `-L'.

* distro/base.scm (gcc-4.7): Patch `LIB_SPEC' to add `-rpath' for each
  `-L'.  Spec string suggested by Marc Glisse <marc.glisse@inria.fr>.
  (libtool): Add `libtool-skip-tests.patch'.

* distro/patches/libtool-skip-tests.patch: New file.
* Makefile.am (dist_patch_DATA): Add it.