* tiny fix for another missed configfile type.

exceptions.UnboundLocalError: local variable 'http_proxy' referenced before assignment
Genel yardım için lütfen 'pisi help' komutunu kullanınız.
Geri-iz:
  File "./pisi-cli", line 79, in ?
    cli.run_command()
  File "/home/faik/depo/uludag/trunk/pisi/pisi/cli/pisicli.py", line 111, in run_command
    self.command.run()
  File "/home/faik/depo/uludag/trunk/pisi/pisi/cli/commands.py", line 466, in run
    pisi.api.emerge(self.args)
  File "./pisi/operations.py", line 742, in emerge
    package_names = atomicoperations.build(x)[0]
  File "./pisi/atomicoperations.py", line 495, in build
    return pisi.build.build(package)
  File "./pisi/build.py", line 861, in build
    return pb.build()
  File "./pisi/build.py", line 194, in build
    self.fetch_source_archive()
  File "./pisi/build.py", line 308, in fetch_source_archive
    self.sourceArchive.fetch()
  File "./pisi/sourcearchive.py", line 50, in fetch
    fetch_url(self.url, ctx.config.archives_dir(), progress)
  File "./pisi/fetcher.py", line 54, in fetch_url
    fetch.fetch()
  File "./pisi/fetcher.py", line 99, in fetch
    self.fetchRemoteFile(partial_file)
  File "./pisi/fetcher.py", line 184, in fetchRemoteFile
    fileObj = urllib2.urlopen(self.formatRequest(urllib2.Request(uri)))
  File "./pisi/fetcher.py", line 242, in formatRequest
    proxy_handler = urllib2.ProxyHandler({URI(http_proxy): ftp_proxy})

pisi/configfile.py

@@ -118,7 +118,7 @@ class ConfigurationSection(object):
                 if item[0] == attr:
                     # all values are returned as string types by ConfigParser.
                     # evaluate "True" or "False" strings to boolean.
-                    if item[1] in ["True", "False"]:
+                    if item[1] in ["True", "False", "None"]:
                         return eval(item[1])
                     else:
                         return item[1]