gnu: xorg: Add missing hashes.

* gnu/packages/xorg.scm: Add hashes to all packages.

gnu: xorg: Transform propagated into normal inputs.

* gnu/packages/xorg.scm: Transform propagated into normal inputs;
     allows to keep packages in alphabetical order.

gnu: xorg: Add and remove packages to mirror X11R7.7/src/everything

* gnu/packages/xorg.scm: Remove packages not from
     ftp://ftp.freedesktop.org/pub/xorg/X11R7.7/src/everything/ .
     Add missing packages, for the time being with a 0 hash and
     without dependencies.
     Correct spelling (all lower case for package names).

gnu: xorg: Initial import from nix.

* gnu/packages/xorg.scm: New module.
* Makefile.am: Add it.

Update TODO.

utils: Add a #:follow-symlinks? parameter to `copy-recursively'.

* guix/build/utils.scm (copy-recursively): Turn `log' into a keyword
  parameter.  Add the `follow-symlinks?' parameter and honor it.

utils: Add `delete-file-recursively'.

* guix/build/utils.scm (delete-file-recursively): New procedure.

gnu: glibc: Install locale data.

* gnu/packages/base.scm (glibc): Add `outputs' field.  Pass
  `--localedir' and set `libc_cv_localedir'.  Add `install-locales'
  phase.

Merge branch 'master' into core-updates

Conflicts:
	Makefile.am
	guix/scripts/gc.scm
	guix/scripts/package.scm
	guix/ui.scm
	tests/guix-package.sh

guix: build: Add "share/pkgconfig" to PKG_CONFIG_PATH, as used by xorg.

* guix/build/gnu-build-system.scm (set-paths): Add "share/pkgconfig"
     to PKG_CONFIG_PATH.

gnu: Add Perl XML::Parser.

* gnu/packages/xml.scm (perl-xml-parser): New variable.

Add (guix build-system perl).

* guix/build-system/perl.scm, guix/build/perl-build-system.scm: New files.
* Makefile.am (MODULES): Add them.
* guix/build-system/gnu.scm (standard-inputs): Make public.

download: Add CPAN mirrors.

* guix/download.scm (%mirrors)[cpan]: New URLs.

gnu: Add vpnc.

* gnu/packages/vpn.scm: New file.
* Makefile.am (MODULES): Add it.
* gnu/packages/patches/vpnc-script.patch: New file.
* Makefile.am (dist_patch_DATA): Add it.

release.nix: Reduce the number of dependencies.

* release.nix (tarball): Use a minimal Git.

gnu: Add libdaemon.

* gnu/packages/libdaemon.scm: New file.
* Makefile.am (MODULES): Add it.

release.nix: Unchroot recursively.

* release.nix (unchroot): Operate recursively on build inputs.

release.nix: Build outside of a chroot.

* release.nix (unchroot): New function.
  (jobs)[tarball, build, build_disable_daemon]: Use it.

ui: Factorize `read/eval-package-expression'.

* guix/scripts/package.scm (read/eval-package-expression): Move to...
* guix/ui.scm (read/eval-package-expression): ... here.
* guix/scripts/build.scm (derivations-from-package-expressions): Use it.

guix package: Add `--install-from-expression'.

* guix/scripts/package.scm (read/eval-package-expression): New
  procedure.
  (show-help): Add `-e'.
  (%options): Likewise.
  (guix-package)[process-actions]: Handle ('install . p) pairs, where P
  is a package.
* tests/guix-package.sh: Add `boot_make_drv'.  Use `-i $boot_make_drv'
  once, and then use `-e $boot_make'.
* doc/guix.texi (Invoking guix package): Document `-e'.