The renames are part of refactoring red_worker's RedChannel to reuse
red_channel.h's RedChannel at the end.
s/red_send_data/red_channel_send/
s/red_pipe_get/red_channel_pipe_get/
s/recive_data/incoming/
s/red_receive/red_channel_receive/
s/channel_handle_message/red_channel_handle_message/
s/channel_is_connected/red_channel_is_connected/
s/red_pipe_add_type/red_channel_pipe_add_type/
with everything (almost) not in red_channel's RedChannel
As a result of CommonChannel a free cb is added to EventHandler,
to take care of non zero offset for embedded EventHandler.
1) add an option to determine if a bitmap can be sent lossy to the client
2) when required, replacing lossy cache items with their correspending
lossless bitmaps
