Add QD (#19402)

* Add recipe for qgraf

* Revert "Add recipe for qgraf"

This reverts commit 76783f7386.

* Add QD

* Update package.py

Changes from review

Co-authored-by: Ivan Razumov <ivan.razumov@cern.ch>

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

@@ -0,0 +1,26 @@
+# Copyright 2013-2020 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 Qd(AutotoolsPackage):
+    """C++/Fortran-90 double-double and quad-double package.
+       With modifications for easier integration with NJet.
+       see http://crd-legacy.lbl.gov/~dhbailey/mpdist/ for authors page"""
+
+    homepage = "https://bitbucket.org/njet/qd-library/src/master/"
+    git      = "https://bitbucket.org/njet/qd-library.git"
+
+    version('2.3.13', commit='a57dde9')
+
+    depends_on('autoconf', type='build')
+    depends_on('automake', type='build')
+    depends_on('libtool',  type='build')
+    depends_on('m4',       type='build')
+
+    def configure_args(self):
+        args = ['--enable-shared']
+        return args