Merge branch 'winsetup' (PR #536)

introduces install dependency of setuptools on Windows

This is a temporary fix, and the setuptools dependency should
be removed in 0.12.

closes gh-536
closes gh-351
closes gh-369

setup.py

@@ -198,10 +198,18 @@ data_files = find_data_files()
 
 # For some commands, use setuptools.  Note that we do NOT list install here!
 # If you want a setuptools-enhanced install, just run 'setupegg.py install'
-if len(set(('develop', 'sdist', 'release', 'bdist_egg', 'bdist_rpm',
+needs_setuptools = set(('develop', 'sdist', 'release', 'bdist_egg', 'bdist_rpm',
            'bdist', 'bdist_dumb', 'bdist_wininst', 'install_egg_info',
            'build_sphinx', 'egg_info', 'easy_install', 'upload',
-            )).intersection(sys.argv)) > 0:
+            ))
+if sys.platform == 'win32':
+    # Depend on setuptools for install on *Windows only*
+    # If we get script-installation working without setuptools,
+    # then we can back off, but until then use it.
+    # See Issue #369 on GitHub for more
+    needs_setuptools.add('install')
+
+if len(needs_setuptools.intersection(sys.argv)) > 0:
     import setuptools
 
 # This dict is used for passing extra arguments that are setuptools