New package libaec: a BSD-licensed replacement for the szip library. (#4437)

* Added package for 'libaec'.

* New version for package 'libaec'.

var/spack/repos/builtin/packages/libszip/package.py

@@ -0,0 +1,52 @@
+##############################################################################
+# 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 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 Libszip(AutotoolsPackage):
+    """Szip is an implementation of the extended-Rice lossless
+     compression algorithm.
+
+    It provides lossless compression of scientific data, and is
+    provided with HDF software products.
+    """
+
+    homepage = "https://support.hdfgroup.org/doc_resource/SZIP/"
+    url      = "https://support.hdfgroup.org/ftp/lib-external/szip/2.1.1/src/szip-2.1.1.tar.gz"
+    list_url = "https://support.hdfgroup.org/ftp/lib-external/szip"
+    list_depth = 2
+
+    provides('szip')
+
+    version('2.1.1', 'dd579cf0f26d44afd10a0ad7291fc282')
+    version('2.1',   '902f831bcefb69c6b635374424acbead')
+
+    def configure_args(self):
+        return [
+            '--enable-production',
+            '--enable-shared',
+            '--enable-static',
+            '--enable-encoding',
+        ]