Fixed #17468 -- Made sure the project/app template management command tests correctly handle an existing directory on Windows.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17377 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/management/templates.py

@@ -1,5 +1,6 @@
 from __future__ import with_statement
 import cgi
+import errno
 import mimetypes
 import os
 import posixpath
@@ -77,7 +78,11 @@ class TemplateCommand(BaseCommand):
             try:
                 os.makedirs(top_dir)
             except OSError, e:
-                raise CommandError(e)
+                if e.errno == errno.EEXIST:
+                    message = "'%s' already exists" % top_dir
+                else:
+                    message = e
+                raise CommandError(message)
         else:
             top_dir = path.expanduser(target)