gnu: subversion, cmake: Clean up descriptions.

* gnu/packages/cmake.scm (cmake): Simplify the synopsis.
* gnu/packages/version-control.scm (subversion): Remove "open-source"
  from the description.

gnu: Add Mercurial.

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

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

Synchronize package descriptions with the Womb.

* gnu/packages/algebra.scm,
  gnu/packages/aspell.scm,
  gnu/packages/autotools.scm,
  gnu/packages/base.scm,
  gnu/packages/bash.scm,
  gnu/packages/bison.scm,
  gnu/packages/cdrom.scm,
  gnu/packages/cflow.scm,
  gnu/packages/compression.scm,
  gnu/packages/cpio.scm,
  gnu/packages/cppi.scm,
  gnu/packages/ddrescue.scm,
  gnu/packages/dejagnu.scm,
  gnu/packages/ed.scm,
  gnu/packages/emacs.scm,
  gnu/packages/fdisk.scm,
  gnu/packages/freeipmi.scm,
  gnu/packages/gawk.scm,
  gnu/packages/gcal.scm,
  gnu/packages/gcc.scm,
  gnu/packages/gdb.scm,
  gnu/packages/gdbm.scm,
  gnu/packages/gettext.scm,
  gnu/packages/ghostscript.scm,
  gnu/packages/global.scm,
  gnu/packages/gnunet.scm,
  gnu/packages/gnupg.scm,
  gnu/packages/gnutls.scm,
  gnu/packages/gperf.scm,
  gnu/packages/gprolog.scm,
  gnu/packages/groff.scm,
  gnu/packages/grub.scm,
  gnu/packages/gsasl.scm,
  gnu/packages/guile.scm,
  gnu/packages/gv.scm,
  gnu/packages/help2man.scm,
  gnu/packages/idutils.scm,
  gnu/packages/indent.scm,
  gnu/packages/less.scm,
  gnu/packages/libidn.scm,
  gnu/packages/libsigsegv.scm,
  gnu/packages/libunistring.scm,
  gnu/packages/lightning.scm,
  gnu/packages/linux.scm,
  gnu/packages/lsh.scm,
  gnu/packages/m4.scm,
  gnu/packages/mail.scm,
  gnu/packages/maths.scm,
  gnu/packages/multiprecision.scm,
  gnu/packages/nano.scm,
  gnu/packages/ncurses.scm,
  gnu/packages/nettle.scm,
  gnu/packages/ocrad.scm,
  gnu/packages/oggvorbis.scm,
  gnu/packages/parted.scm,
  gnu/packages/plotutils.scm,
  gnu/packages/pth.scm,
  gnu/packages/readline.scm,
  gnu/packages/recutils.scm,
  gnu/packages/rush.scm,
  gnu/packages/scheme.scm,
  gnu/packages/screen.scm,
  gnu/packages/shishi.scm,
  gnu/packages/smalltalk.scm,
  gnu/packages/system.scm,
  gnu/packages/texinfo.scm,
  gnu/packages/time.scm,
  gnu/packages/unrtf.scm,
  gnu/packages/version-control.scm,
  gnu/packages/wdiff.scm,
  gnu/packages/wget.scm,
  gnu/packages/which.scm,
  gnu/packages/xnee.scm,
  gnu/packages/zile.scm: Change value of the 'description' field to that
  of the Womb.

gnu: git: Add graphical tools to the "gui" output.

* 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: git: Do not retain reference from "out" to Subversion.

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

gnu: git: Add "svn" output for 'git-svn'.

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

gnu: subversion: Install Perl bindings.

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

Merge branch 'master' into core-updates

Merge branch 'python'

Merge branch 'master' into core-updates

gnu: git: Switch back to Python 2.

* gnu/packages/version-control.scm (git): Switch back to Python 2.

gnu: subversion: Switch back to Python 2.

* gnu/packages/version-control.scm (subversion): Switch back to Python 2.

gnu: bazaar: Switch back to Python 2.

* gnu/packages/version-control.scm (bazaar): Switch back to Python 2.

gnu: python: Replace input python by python-wrapper.

* gnu/packages/{gdb.scm (gdb), cryptsetup.scm (cryptsetup),
  ghostscript.scm (ghostscript), glib.scm (glib), gnupg.scm (pius),
  gtk.scm (cairo, harfbuzz), libevent.scm (libevent), netpbm.scm (netpbm),
  oggvorbis.scm (libkate), qemu.scm (qemu), samba.scm (samba),
  texlive.scm (rubber, texlive), version-control.scm (subversion),
  xml.scm (libxml2, libxslt), xorg.scm (libxcb, mesa, xcb-proto, xorg-server),
  yasm.scm (yasm), zip.scm (zziplib)}:
  Replace input python by python-wrapper.

gnu: Add git.

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

gnu: Rename "libapr" to "apr" and "libaprutil" to "apr-util".

* gnu/packages/apr.scm: Rename file from libapr.scm.
* gnu/packages/patches/apr-skip-getservbyname-test.patch: Rename file
    from libapr-skip-getservbyname-test.patch.
* gnu-system.am (GNU_SYSTEM_MODULES): Rename module libapr to apr.
* gnu-system.am (dist_patch_DATA): Rename patch file.
* gnu/packages/apr.scm (apr): Rename from libapr.
* gnu/packages/apr.scm (apr-util): Rename from libaprutil, change
    input name.
* gnu/packages/version-control.scm (subversion): Change input name.

gnu: subversion: Fetch over plain HTTP.

* gnu/packages/version-control.scm (subversion): Use the http:// URL
  to work around <http://bugs.gnu.org/14884>.  Reported by Mark Weaver
  and Andreas Enge.

gnu: Add GNU vc-dwim.

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

Merge branch 'master' into core-updates

Conflicts:
	gnu/packages/make-bootstrap.scm

gnu: Move subversion with the other version control systems.

* gnu/packages/subversion.scm: Remove file.
* gnu/packages/version-control.scm (subversion): New variable.
* Makefile.am (MODULES): remove subversion.scm.