[FIX] document_ftp: fix server shutdown

bzr revid: chs@openerp.com-20101026134449-mfan2d5pfj9m0pqx

addons/document_ftp/ftpserver/__init__.py

@@ -59,6 +59,7 @@ if HOST.lower() == 'none':
 else:
     netsvc.Logger().notifyChannel("FTP", netsvc.LOG_INFO, "\n Serving FTP on %s:%s\n" % (HOST, PORT))
     ds = ftp_server()
+    ds.daemon = True
     ds.start()
 
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