New package Model Coupling Toolkit (MCT) (#41564)

* New package Model Coupling Toolkit (MCT)
* Remove ~mpi variant from mct, build is not working correctly
* Remove boilerplate stuff from var/spack/repos/builtin/packages/mct/package.py

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

@@ -0,0 +1,26 @@
+# Copyright 2013-2023 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.package import *
+
+
+class Mct(AutotoolsPackage):
+    """Model Coupling Toolkit (MCT): toolkit to support the construction
+    of highly portable and extensible high-performance couplers for
+    distributed memory parallel coupled models."""
+
+    homepage = "https://github.com/MCSclimate/MCT"
+    url = "https://github.com/MCSclimate/MCT/archive/refs/tags/MCT_2.11.0.tar.gz"
+
+    maintainers("climbfuji")
+
+    # This is a custom license that doesn't match any of the ones listed
+    # in https://spdx.org/licenses/, but similar to Creative Commons?
+    license("https://github.com/MCSclimate/MCT/blob/master/LICENSE")
+
+    version("2.11.0", sha256="1b2a30bcba0081226ff1f1f5152e82afa3a2bb911215883965e669f776dcb365")
+    version("2.10.0", sha256="42f32e3ab8bba31d16a1c6c9533f717a9d950e42c9b03b864b3436335d4e1b71")
+
+    depends_on("mpi")