gnu: node: Do not use bundled dependencies.

The Node build system was previously building its own copies of
OpenSSL (yikes!), libuv, and zlib.

* gnu/packages/node.scm (node)[inputs]: Add openssl, libuv, and zlib.
  [arguments]: Add configure flags for using system libraries.  Use
  'modify-phases' syntax.

gnu: util-linux: Make description more descriptive.

* gnu/packages/linux.scm (util-linux)[description]: Give some more
  information about the package.

Signed-off-by: Andreas Enge <andreas@enge.fr>

gnu: pcre: Update to 8.38.

* gnu/packages/pcre.scm (pcre): Update to 8.38.  Add source URI for
  main FTP site.

gnu: libxml2: Update to 2.9.3.

* gnu/packages/patches/libxml2-CVE-2015-1819.patch,
  gnu/packages/patches/libxml2-CVE-2015-7941-pt1.patch,
  gnu/packages/patches/libxml2-CVE-2015-7941-pt2.patch,
  gnu/packages/patches/libxml2-CVE-2015-7942-pt1.patch,
  gnu/packages/patches/libxml2-CVE-2015-7942-pt2.patch,
  gnu/packages/patches/libxml2-CVE-2015-8035.patch,
  gnu/packages/patches/libxml2-bug-737840.patch,
  gnu/packages/patches/libxml2-bug-738805.patch,
  gnu/packages/patches/libxml2-bug-746048.patch,
  gnu/packages/patches/libxml2-bug-747437.patch,
  gnu/packages/patches/libxml2-bug-751603.patch,
  gnu/packages/patches/libxml2-bug-751631.patch,
  gnu/packages/patches/libxml2-bug-754946.patch,
  gnu/packages/patches/libxml2-bug-754947.patch,
  gnu/packages/patches/libxml2-bug-755857.patch,
  gnu/packages/patches/libxml2-fix-catalog-corruption.patch,
  gnu/packages/patches/libxml2-id-attrs-in-xmlSetTreeDoc.patch,
  gnu/packages/patches/libxml2-node-sort-order-pt1.patch,
  gnu/packages/patches/libxml2-node-sort-order-pt2.patch: Delete files.
* gnu-system.am (dist_patch_DATA): Remove them.
* gnu/packages/xml.scm (libxml2): Update to 2.9.3.  Remove patches.

gnu: openssl: Update to 1.0.2e [fixes CVE-2015-{3193,3194,3195}].

* gnu/packages/tls.scm (openssl): Update to 1.0.2e.
  [arguments]: Rename 'fix-man-dir' phase to 'patch-Makefile.org',
  and patch SHELL in Makefile.org.  Add 'fix-broken-symlinks' phase.
  Return #t from 'patch-tests' phase.

gnu: keepassx: Update to 2.0.

* gnu/packages/password-utils.scm (keepassx): Update to 2.0.
[source]: Change to official release location.

gnu: python2-zope-security: Use python2-zope-testrunner.

* gnu/packages/python.scm (python2-zope-security): Do it.

gnu: help2man: Update to 1.47.3.

* gnu/packages/man.scm (help2man): Update to 1.47.3.

gnu: libmicrohttpd: Update to 0.9.47.

* gnu/packages/gnunet.scm (libmicrohttpd): Update to 0.9.47.

gnu: mp3info: Update URL.

* gnu/packages/mp3.scm (mp3info): Update source URL.

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

gnu: Add myrepos.

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

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

gnu: Add python-docopt.

* gnu/packages/python.scm (python-docopt, python2-docopt): New
  variables.

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

gnu: gajim: Update to 0.16.4.

* gnu/packages/messaging.scm (gajim): Update to 0.16.4.

gnu: pinentry: Update to 0.9.6.

* gnu/packages/gnupg.scm (pinentry): Update to 0.9.6.
[inputs]: Add libsecret.

gnu: gpgme: Update to 1.6.0.

* gnu/packages/gnupg.scm (gpgme): Update to 1.6.0.

gnu: gnupg: Update to 2.1.10.

* gnu/packages/gnupg.scm (gnupg): Update to 2.1.10.
[inputs]: Add adns.

gnu: gnupg-2.0: Update to 2.0.29.

* gnu/packages/gnupg.scm (gnupg-2.0): Update to 2.0.29.
[inputs]: Add adns.

gnu: libassuan: Update to 2.4.2.

* gnu/packages/gnupg.scm (libassuan): Update to 2.4.2.

gnu: Move pkg-config to native inputs.

* gnu/packages/xiph.scm (ao)[native-inputs]: Move pkg-config from
inputs.
* gnu/packages/xorg.scm (xf86-video-geode)[native-inputs]: Likewise.

gnu: nano: Update to 2.5.0.

* gnu/packages/nano.scm (nano): Update to 2.5.0.