* gnu/packages/gtk.scm (gtk+-2): Update to 2.24.21, add inputs perl and
    python.

* gnu/packages/gtk.scm (gtk+): Switch to version 3.10.0.
* gnu/packages/gtk.scm (gtk+-2): New name for version 2.24.20.

* gnu/packages/gtk.scm (gtk+-3): Delete variable.

* gnu/packages/gtk.scm (at-spi2-atk): New variable.

* gnu/packages/gtk.scm (atk): Update to 2.10.0.

* gnu/packages/gtk.scm (at-spi2-core): New variable.

* gnu/packages/xorg.scm (libxi): Propagate inputs inputproto and libx11,
    as stipulated by xi.pc.

* gnu/packages/glib.scm (glib): Update to 2.38.0 and drop rewriting of GTESTER.
* gnu/packages/patches/glib-tests-homedir.patch: Update patch for 2.38.0.
* gnu/packages/patches/glib-tests-desktop.patch: Update patch for 2.38.0 and
    drop test dbus-appinfo.

* gnu/packages/glib.scm (gobject-introspection): New variable.

* gnu/packages/version-control.scm (git): Add "gui" output.  Add Tcl/Tk
  as inputs.  Add #:configure-flags.  Augment 'split' phase to handle
  graphical user interfaces.

* gnu/packages/version-control.scm (git): Wrap 'git-svn', not 'git', for
  PERL5LIB and LD_LIBRARY_PATH.

* gnu/packages/web.scm (httpd): New variable
* gnu-system.am (GNU_SYSTEM_MODULES): Add it

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

Reported by Nikita Karetnikov <nikita@karetnikov.org>.

* gnu/packages/compression.scm (bzip2): Add 'set-cross-environment'
  phase for cross-compilation.

* gnu/packages/version-control.scm (git): Add SUBVERSION as an input.
  Add 'split' phase.

* gnu/packages/version-control.scm (subversion): Add
  'install-perl-bindings' phase.

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

* gnu/packages/gnunet.scm (libmicrohttpd): Update to 0.9.30.

* gnu/packages/bison.scm (bison): Move FLEX to 'inputs', and remove the
  hack that turned off its test suite.
* gnu/packages/flex.scm (flex): Add 'bison-for-tests' in 'inputs', and
  use that to run the tests.

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

* gnu/packages/gtk.scm (guile-cairo): New variable.

* gnu/packages/cdrom.scm (xorriso): Update to 1.3.2.

* gnu/packages/lightning.scm (lightning): Update to 2.0.1.

* gnu/packages/freeipmi.scm (freeipmi): Update to 1.3.2.

* gnu/packages/gdb.scm (gdb): Update to 7.6.1.

* gnu/packages/bison.scm (bison): Update to 3.0.  Make Perl a native
  input.  Add a variant of Flex as a native input.  Use #:export instead
  of 'define-public'.
* gnu/packages/flex.scm (flex): Use #:export instead of 'define-public'.

* gnu/packages/maths.scm (units): Update to 2.02.

* gnu/packages/texinfo.scm (texinfo): Update to 5.2.

* gnu/packages/global.scm (global): Update to 6.2.9.

* configure.ac: Switch to 0.5.

* gnu/packages/package-management.scm (guix): Update to 0.4.
  (guix-0.4): Remove.
* gnu/system/vm.scm (qemu-image, system-qemu-image): Use GUIX instead of
  GUIX-0.4.

* gnu/system/vm.scm (system-qemu-image): Remove reference from BOOT to
  MINGETTY since MINGETTY may not be valid yet.

* gnu/system/vm.scm (system-qemu-image): Add grep, sed, and Findutils to
  the profile.

* doc/guix.texi: Fix typos.

Fixes <http://bugs.gnu.org/15187>.
Reported by Mark H. Weaver <mhw@netris.org>.

* gnu/packages/linux.scm (module-init-tools): Remove reference to
  Gentoo's pre-built man pages and 'unpack-man-pages' phase.  Add
  'fake-docbook' phases.

* gnu/packages/package-management.scm (guix-0.4): Remove warning.