Use https for www.python.org downloads

!http://www.python.org/ is redirecting to !https://www.python.org/ during fetch-inputs.sh.

--2014-07-14 17:01:48--  http://www.python.org/ftp/python/2.7.5/Python-2.7.5.tar.bz2
Resolving www.python.org (www.python.org)... 199.27.77.175
Connecting to www.python.org (www.python.org)|199.27.77.175|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://www.python.org/ftp/python/2.7.5/Python-2.7.5.tar.bz2 [following]
--2014-07-14 17:01:48--  https://www.python.org/ftp/python/2.7.5/Python-2.7.5.tar.bz2
Connecting to www.python.org (www.python.org)|199.27.77.175|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 12147710 (12M) [application/octet-stream]
Server file no newer than local file `Python-2.7.5.tar.bz2' -- not retrieving.

This patch saves a redirect.

--2014-07-14 17:04:49--  https://www.python.org/ftp/python/2.7.5/Python-2.7.5.tar.bz2
Resolving www.python.org (www.python.org)... 23.235.47.175
Connecting to www.python.org (www.python.org)|23.235.47.175|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 12147710 (12M) [application/octet-stream]
Server file no newer than local file `Python-2.7.5.tar.bz2' -- not retrieving.