gnu: Add File-ShareDir.

* gnu/packages/perl.scm (perl-file-sharedir): New variable.

gnu: Add File-ShareDir-Install.

* gnu/packages/perl.scm (perl-file-sharedir-install): New variable.

gnu: Add Class-Inspector.

* gnu/packages/perl.scm (perl-class-inspector): New variable.

gnu: Add Time-Local.

* gnu/packages/perl.scm (perl-time-local): New variable.

gnu: Group and alphabetize perl module packages.

* gnu/packages/web.scm (perl-encode-locale, perl-file-listing,
  perl-html-parser, perl-html-tagset, perl-http-cookies, perl-http-daemon,
  perl-http-date, perl-http-message, perl-http-negotiate, perl-io-html,
  perl-io-socket-ssl, perl-libwww, perl-lwp-mediatypes, perl-net-http,
  perl-uri, perl-www-curl, perl-www-robotrules): Group and alphabetize.

gnu: Add WenQuanYi ZenHei font.

* gnu/packages/fonts.scm (font-wqy-zenhei): New variable.

gnu: Add PCB.

* gnu/packages/engineering.scm (pcb): New variable.

gnu: Add openspecfun.

* gnu/packages/maths.scm (openspecfun): New variable.

gnu: Add openlibm.

* gnu/packages/maths.scm (openlibm): New variable.

gnu: Add enlightenment.

* gnu/packages/enlightenment.scm (enlightenment): New variable.

system: Don't compare <pam-service> objects with 'equal?'.

Fixes <http://bugs.gnu.org/20037>.
Reported by 宋文武 <iyzsong@gmail.com> and Tomáš Čech.

* gnu/system.scm (operating-system-etc-directory): Remove call to
  'delete-duplicates'.
* gnu/system/linux.scm (pam-services->directory)[builder]: Add call to
  'delete-duplicates'.

Revert "gnu: vlc: Update to 2.2.0"

This reverts commit ad036bda89e338ec44d314d6c17049aff57c788f.

This version has always failed to build according to
<http://hydra.gnu.org/job/gnu/master/vlc-2.2.0.x86_64-linux/all>.

gnu: icecat: Update to 31.5.0.

* gnu/packages/patches/icecat-CVE-2015-0822.patch,
  gnu/packages/patches/icecat-CVE-2015-0827-pt-1.patch,
  gnu/packages/patches/icecat-CVE-2015-0827-pt-2.patch,
  gnu/packages/patches/icecat-CVE-2015-0827-pt-3.patch,
  gnu/packages/patches/icecat-CVE-2015-0831-pt-1.patch,
  gnu/packages/patches/icecat-CVE-2015-0831-pt-2.patch,
  gnu/packages/patches/icecat-CVE-2015-0836-pt-01.patch,
  gnu/packages/patches/icecat-CVE-2015-0836-pt-02.patch,
  gnu/packages/patches/icecat-CVE-2015-0836-pt-03.patch,
  gnu/packages/patches/icecat-CVE-2015-0836-pt-04.patch,
  gnu/packages/patches/icecat-CVE-2015-0836-pt-05.patch,
  gnu/packages/patches/icecat-CVE-2015-0836-pt-06.patch,
  gnu/packages/patches/icecat-CVE-2015-0836-pt-07.patch,
  gnu/packages/patches/icecat-CVE-2015-0836-pt-08.patch,
  gnu/packages/patches/icecat-CVE-2015-0836-pt-09.patch,
  gnu/packages/patches/icecat-CVE-2015-0836-pt-10.patch,
  gnu/packages/patches/icecat-CVE-2015-0836-pt-11.patch: Remove files.
* gnu-system.am (dist_patch_DATA): Remove them.
* gnu/packages/gnuzilla.scm (icecat): Update to 31.5.0.  Remove patches.
  Add 'nspr', 'nss', and 'cairo' to inputs.  Add configure flags to use
  those system libraries.

gnu: nss: Include -L$libdir in output of "nss-config --libs".

* gnu/packages/patches/nss-pkgconfig.patch (nss-config): Include -L$libdir in
  output of "nss-config --libs".

gnu: nspr: Update to 4.10.8.

* gnu/packages/gnuzilla.scm (nspr): Update to 4.10.8.

gnu: enca: Run tests sequentially.

* gnu/packages/textutils.scm (enca)[arguments]: New field.  Fixes build
  issue visible at <http://hydra.gnu.org/build/308913>.

gnu: Add htsjdk.

* gnu/packages/bioinformatics.scm (htsjdk): New variable.

gnu: ratpoison: Install xsession file (ratpoison.desktop).

* gnu/packages/ratpoison.scm (ratpoison.desktop): New variable.
  (ratpoison)[arguments]: New field.

Add Paul to 'AUTHORS'.

services: Statically report duplicate dmd service identifiers.

Reported by 白い熊 @相撲道 <guix-devel_gnu.org@sumou.com>
at <http://lists.gnu.org/archive/html/guix-devel/2015-03/msg00264.html>.

* gnu/services/dmd.scm (assert-no-duplicates): New procedure.
  (dmd-configuration-file): Use it.
* po/guix/POTFILES.in: Add gnu/services/dmd.scm.
* tests/guix-system.sh (errorfile): Add test.