Add new package: netkit-ftp (#16876)

* Add new package: netkit-ftp

* remove parallel constraint

var/spack/repos/builtin/packages/netkit-ftp/package.py

@@ -0,0 +1,20 @@
+# 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 NetkitFtp(AutotoolsPackage):
+    """netkit-ftp is the original file transfer client program for Linux."""
+
+    homepage = "http://ftp.uk.linux.org/pub/linux/Networking/netkit"
+    git      = "https://github.com/mmaraya/netkit-ftp.git"
+
+    version('master', branch='master')
+
+    def install(self, spec, prefix):
+        mkdirp(prefix.bin)
+        mkdirp(prefix.man.man1)
+        make('install')