Add pyftpdlib for future ftp unit tests....

third_party/pyftpdlib/LICENSE

Index: third_party/pyftpdlib/LICENSE
===================================================================
--- third_party/pyftpdlib/LICENSE	(revision 0)
+++ third_party/pyftpdlib/LICENSE	(revision 0)
@@ -0,0 +1,22 @@
+======================================================================
+Copyright (C) 2007  Giampaolo Rodola' <g.rodola@gmail.com>
+
+                         All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that copyright notice and this permission
+notice appear in supporting documentation, and that the name of
+Giampaolo Rodola' not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+Giampaolo Rodola' DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+NO EVENT Giampaolo Rodola' BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+======================================================================