CTL_STATUS_t ctl_xively_datastream_post(CTL_XIVELY_DATASTREAM_t *self, CTL_XIVELY_DATAPOINT_t *point);
ctl_xively_datastream_post posts the datapoint point to the datastream self.
ctl_xively_datastream_post returns a standard status code. If there is not enough space in the stream to post the point, ctl_xively_datastream_post return CTL_OUT_OF_MEMORY.
This is safe to call from a thread or CTL interrupt handler.