adding perl-bio-perl and dependencies (#5845)

* perl-bio-perl and dependencies

* minor fixes

* condensing code

* fixing doc error

var/spack/repos/builtin/packages/perl-exception-class/package.py

@@ -0,0 +1,37 @@
+##############################################################################
+# Copyright (c) 2013-2017, 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 NOTICE and LICENSE files 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 PerlExceptionClass(PerlPackage):
+    """A module that allows you to declare real exception classes in Perl"""
+
+    homepage = "http://search.cpan.org/~drolsky/Exception-Class-1.43/lib/Exception/Class.pm"
+    url      = "http://search.cpan.org/CPAN/authors/id/D/DR/DROLSKY/Exception-Class-1.43.tar.gz"
+
+    version('1.43', 'ff3fa5c26fa417b68d1f2d0a14cce7f1')
+
+    depends_on('perl-devel-stacktrace', type=('build', 'run'))
+    depends_on('perl-class-data-inheritable', type=('build', 'run'))