new package: py-bz2file (#12761)

* update py-xopen (add 0.8.2 checksum)

* refine version specific dependencies

add py-bz2file, which needs to be created

* create py-bz2file

* Revert "refine version specific dependencies"

This reverts commit 70649da988.

* Revert "update py-xopen (add 0.8.2 checksum)"

This reverts commit 7400f44caa.

var/spack/repos/builtin/packages/py-bz2file/package.py

@@ -0,0 +1,15 @@
+# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class PyBz2file(PythonPackage):
+    """Python library for reading and writing bzip2-compressed files."""
+
+    homepage = "https://github.com/nvawda/bz2file"
+    url      = "https://pypi.io/packages/source/b/bz2file/bz2file-0.98.tar.gz"
+
+    version('0.98', sha256='64c1f811e31556ba9931953c8ec7b397488726c63e09a4c67004f43bdd28da88')