* src/channel.c (adjust_rec_window): Adapted for flow control.
(channel_process_status): On LSH_CHANNEL_READY_REC, call
prepare_window_adjust and c->write directly, rather than
adjust_rec_window.
(do_channel_data): Don't call adjust_rec_window.
(do_channel_extended_data): -"-
(init_channel): Install adjust_rec_window as flow control callback.

Rev: src/channel.c:1.41
Rev: src/channel.h:1.35