(transport_timeout, transport_timeout_close): New functions.
(transport_close): New function.
(transport_kexinit_handler): New function.
(transport_timeout_reexchange, transport_timeout_keyexchange): New
functions.
(oop_read_ssh): Bug fixes.
(transport_write_pending): Generate events, depending on
kex.write_state.
(transport_send_kexinit): Implemented timeouts, tracking of the
write state, and partial support for sending a speculative first
keyexchange packet.
(transport_keyexchange_finish): New function.
(transport_handshake): New function.

Rev: src/transport.c:1.6.2.4
Rev: src/transport.h:1.7.2.4