Add QBank package (#3641)

* Add QBank package

* Install the documentation and add it to the MANPATH

* Add Perl DBI package

* Make sure setup method variables are consistent

var/spack/repos/builtin/packages/perl-dbi/package.py

@@ -0,0 +1,36 @@
+##############################################################################
+# Copyright (c) 2013-2016, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://github.com/llnl/spack
+# Please also see the LICENSE file for our notice and the LGPL.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License (as
+# published by the Free Software Foundation) version 2.1, February 1999.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
+# conditions of the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##############################################################################
+from spack import *
+
+
+class PerlDbi(PerlPackage):
+    """The DBI is the standard database interface module for Perl. It defines
+    a set of methods, variables and conventions that provide a consistent
+    database interface independent of the actual database being used."""
+
+    homepage = "https://dbi.perl.org/"
+    url      = "http://search.cpan.org/CPAN/authors/id/T/TI/TIMB/DBI-1.636.tar.gz"
+
+    version('1.636',  '60f291e5f015550dde71d1858dfe93ba')