Vendor setuptools

fixes spack#9034

lib/spack/external/__init__.py

@@ -111,6 +111,14 @@
   compatibility -- some ``{}`` format strings were replaced, and the
   import for ``OrderedDict`` was tweaked.
 
+setuptools
+----------
+
+* Homepage: https://setuptools.readthedocs.io/en/latest/
+* Usage: Needed by pytest.
+* Version: 36.8.0 (latest supporting python 2.6)
+* Note: pkg_resources is part of setuptools and has been vendored too
+
 six
 ---
 

lib/spack/external/pkg_resources/LICENSE

@@ -0,0 +1,19 @@
+Copyright (C) 2016 Jason R Coombs <jaraco@jaraco.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.