Use 101 as the telephone-event payload type

Ignore-this: cf3ada1c05931ab5d4ad5f8766afba52

darcs-hash:20131227113954-56b4d-4242728dca59fb820028c80d6571d99c28f2a4eb
Avoid exceptions if NOTIFY cannot be sent when terminating subscriptions

Ignore-this: 251f06ea754ebed7606dbbcd51bce068

Connection might be broken or whatever, but we don't care, the subscription
is finished.

darcs-hash:20131230153646-56b4d-cdad7eb9f6ad0fa33c69e73124e61d4675bbbf17
Always open file in binary mode for file transfers

Ignore-this: 4c87ad6902066ef24c7cdc71a8b05c7d

darcs-hash:20140110140321-56b4d-327c03f59b526d7b1778033600404287d87493cb