``ftp:`` download URLs now work correctly. (backport from trunk)

--HG--
branch : setuptools-0.6
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/branches/setuptools-0.6%4057371

EasyInstall.txt

@@ -1233,6 +1233,9 @@ displayed MD5 info (broken onto two lines for readability)::
 Release Notes/Change History
 ============================
 
+0.6c7
+ * ``ftp:`` download URLs now work correctly.
+
 0.6c6
  * EasyInstall no longer aborts the installation process if a URL it wants to
    retrieve can't be downloaded, unless the URL is an actual package download.

setuptools/__init__.py

@@ -80,5 +80,3 @@ import distutils.filelist
 distutils.filelist.findall = findall    # fix findall bug in distutils.
 
 
-
-

setuptools/package_index.py

@@ -619,7 +619,7 @@ class PackageIndex(Environment):
 
     def _attempt_download(self, url, filename):
         headers = self._download_to(url, filename)
-        if 'html' in headers['content-type'].lower():
+        if 'html' in headers.get('content-type','').lower():
             return self._download_html(url, headers, filename)
         else:
             return filename
@@ -695,7 +695,6 @@ def htmldecode(text):
 
 
 
-
 def open_with_auth(url):
     """Open a urllib2 request, handling HTTP authentication"""