ISC_DEFAULT_MAX_MSG_SIZE:   2048 => 8176
    ISC_DEFAULT_MAX_QUEUED_SIZE: 600 => 50
    ISC_DEFAULT_MAX_DEQUEUE_LEN:  10 => 30
    ISC_DEFAULT_MAX_OPEN_RETRIES: 10 => 10
    ISC_DEFAULT_MAX_BACKLOG:       5 => 50
Moved some structs from isc.h and stopped using a defined name:
(struct isc_msg): Was: IscMessage.
(struct isc_msg_q_entry): Was: IscMsgQE.
(struct isc_msgqueue): Was: IscMsgQueue.
(struct isc_session_cfg): Was: IscSessionConfig.
(struct isc_scb_entry): Was: IscSessionList.
Moved some functions from isc.h:
(isc_freemsg): Moved.
(isc_create): Moved.
(isc_insert): Moved.
(isc_remove): Moved.
(isc_createtcp): Moved.
(isc_bindtcp): Moved.
(isc_allocmsg): Moved.
Moved some functions to isc.h:
(isc_setallocfn): Moved.
Other changes:
(struct isc_msg): Removed the address field.
(struct isc_session_cfg): Removed the version field.
(isc_log): Function removed.
(isc_create): Removed the "IscHandler *fun" argument, and added
	mcb and initial_state arguments.
(isc_createtcp): Added mcb and initial_state arguments.
(isc_strdup): Function removed.
(isc_default_read_fn): Function removed.
(isc_default_write_fn): Function removed.
(isc_default_close_fn): Function removed.
(isc_pollqueue): Removed the external function.  Retain the macro.
(isc_setabortfn): Place inside #if 0, since it is currently unused.
(isc_check_read_callback): New function.
(isc_cancel_read_callback): New function.
(isc_cancel_write_callback): New function.
(ISC_SCALLFUN1): Macro removed.
(ISC_SCALLFUN2): Macro removed.
(ISC_SCALLFUN3): Macro removed.