which were introduced in the previous commit.
(isc_gethostname): Ditto.
(isc_getportnum): Ditto.

scheduling of clients, so that one client cannot starve other clients
for resources.  (Bug 102).  Run the database save, garb, and check for
killed clients from three separate liboop timer callbacks.  Use liboop
for signal dispatching.  Use liboop.  (Bug 106).  Code cleanup.
Renamed a few constants that have nothing to do with ISC.  Make it
possible to read an unsigned int from the config file.  Add SA_RESTART
support to liboop.  (This has been sent to the liboop maintainer.)
(Fixes bug 845).  Add a few utility string functions.

stuff that isn't used by lyskom-server.  Move much internal stuff from
isc.h to intern.h.

the latter no longer exists.

(check-dejagnu): New target.
(check): Depend on check-dejagnu and check-nondejagnu, and move
	all dependencies to one of those targets.

(garb_text): Expect the caller to wait long enough when the garb
	shouldn't be running.  Return true when the garb is completed,
	instead of when the garb shouldn't be running.

	All callers updated.

(parameters): Removed "Idle timeout".  Added "Garb busy postponement",
	"Penalty per call", "Penalty per read", "Max penalty" and "Low
	penalty".

(server_init): Initialize liboop.  Adjusted to the new isc API:s.
(sighandler_hup): Now an liboop signal callback, not a real signal
	handler.
(sighandler_quit): Ditto.
(sighandler_usr2): Ditto.
(sighandler_usr1): Ditto.  Do the real work here.
(sighandler_winch): Ditto.  Do the real work here.
(setup_sighandlers): Removed.
(restart_syscalls_on_intr): Removed.
(intr_syscalls_on_intr): Removed.
(main): Clean up liboop structures on shutdown.

	penalty_per_call, penalty_per_read, max_penalty and low_penalty.
(reread_param): Variable removed.

(KOM_MSG_INCOMPLETE): New name for former ISC_MSG_INCOMPLETE.  All
	users updated.
(KOM_LOGOUT): New name for former ISC_LOGOUT.  All users updated.

	default_want_async variable.  Initialize penalty,
	penalty_generation, queue_next, queue_prev, on_queue.
(kill_client): Assert that on_queue is false.

	Adjusted to the new API of sync_part().

	queue_next, on_queue.
(handle_accept_event): New function.

(penalty_generation): New static variable.
(work_done): Ditto.
(is_idle): Ditto.
(queue_first): Ditto.
(queue_last): Ditto.
(kill_pending): Ditto.
(do_statistics): Variable removed.
(queue_add): New static function.
(queue_remove): Ditto.
(set_time): Ditto.
(logout_client): Remove the client from the queue of pending clients.
(parse_unparsed): Add penalty points for finished calls and protocol
	errors.  Don't delete the parsed part of unparsed.
(parse_message): Function removed.
(logout_request): Function removed.
(parse_forgotten): Ditto.
(message_request): Ditto.
(add_to_kill_list): Add an oop timer event callback to check_kill_flg
	when a client is added to the kill list.
(check_kill_flg): Changed API: this is now an oop timer callback
	function.
(write_err_cb): New static function.
(adjust_penalty): Ditto.
(read_from_connection): Ditto.
(setup_timer): Ditto.
(enable_idle_check): Ditto.
(check_idle_callback): Ditto.
(garb_callback): Ditto.
(saver_callback): Ditto.
(data_available_callback): Ditto.
(handle_accept_event): New function.
(login_request): Take an isc_scb as argument instead of an isc event.
	Add read and write error callback functions for the new client.
(toploop): Rewritten to use liboop.

(union param_value): Unused union removed.

(lyskomd_SOURCES): Added oop-malloc.h and oop-malloc.c.
(lyskomd_LDADD): Link against liboop.a.

	and msg arguments.
(isc_tcp_destroy_fn): Function removed.
(isc_connecttcp): Ditto.
(isc_opentcp): Ditto.
(isc_tcp_funs): Function table removed.
(isc_createtcp): Added mcb and initial_state arguments.  Removed
	obsolete bogus setsockopt() calls.
(isc_bindtcp): Don't check the type of the session.
(isc_accept_cb): New function.
(isc_listentcp): Added the cb argument.  Don't set the state here;
	that is now done by isc_create().  Add isc_accept_cb() as a
	read callback.

(isc_write): Ditto.

(isc_getraddress): Ditto.
(isc_copyaddress): Function removed.
(isc_getservice): Ditto.

(isc_default_write_fn): Ditto.
(isc_default_close_fn): Ditto.
(isc_close): Ditto.
(isc_sessions): Ditto.
(isc_openfd): Ditto.
(isc_file_destroy_fn): Ditto.
(isc_openfile): Ditto.
(isc_default_fun): Function table removed.
(isc_create): Removed the "IscHandler *fun" argument, and added
	mcb and initial_state arguments.  Initialize the currently
	existing fields.
(isc_set_read_callback): New function.
(isc_check_read_callback): Ditto.
(isc_cancel_read_callback): Ditto.
(isc_cancel_write_callback): Ditto.
(isc_destroy): Cancel read, write and accept callbacks.  Free
	raddr and laddr instead of calling a destroy handler.
(isc_disable): Remove the read callback.
(isc_enable): Maybe add the read callback.

(write_cb): New function.
(isc_oflush): Don't close the socket if the output queue is too big.
	Instead, isc_check_read_callback() refuses to read input from
	the client until it reads enough of the output queue.  Assert
	that this isn't a listening session, but don't otherwise check
	the state.  Call write instead of using the handler mechanism.
	Call the write_err_cb callback function if an error occurs.
	Don't update statistics that nobody uses.  Set up a liboop
	write callback if we cannot send all output at once.  Call
	isc_check_read_callback().
(isc_send): Function removed.
(isc_sendto): Ditto.

(isc_reallocmsg): Function removed.
(isc_copymsg): Ditto.
(isc_mkstrmsg): Ditto.

	argument.  Allocate a cfg struct.
(isc_cfg_fd_relocate): New function.
(isc_shutdown): Free the cfg struct.

(isc_getnextevent): Function removed.
(isc_dispose): Ditto.

use the real names instead:
    IscSessionConfig  => struct isc_session_cfg
    IscAddress        => union  isc_address
    IscMessage        => struct isc_msg
    IscMsgQE          => struct isc_msg_q_entry
    IscMsgQueue       => struct isc_msgqueue
    IscSession        => struct isc_scb
    IscSessionList    => struct isc_scb_entry
    IscMaster         => struct isc_mcb
(IscMasterConfig): Define and struct removed.
(IscConfig): Ditto.
(IscHandlerCache): Ditto
(IscHandler): Ditto.
(IscHandlerList): Ditto.
(IscEvent): Ditto.
(IscEventType): Define and enum removed.
(IscSessionType): Ditto.
(IscSessionInfo): Define and union removed.
(IscSessionStats): Ditto.
(enum isc_session_state): Removed the states ISC_STATE_UNKNOWN,
	ISC_STATE_CONNECTING and ISC_STATE_CLOSING2.
(union isc_address): Don't wrap the saddr field inside a
	meaningless struct named ip.
(isc_initialize): Removed the cfg argument, and added the
	oop_source argument.
(struct isc_scb): Removed the following fields: type, isc_errno,
	rd_msg_q, info, logintime, idlesince, stats and handlers.
	Added the following fields: raddr, laddr, master, accept_cb,
	write_err_cb, data_available_callback, data_available_user,
	data_available_registered and write_cb_registered.
(struct isc_mcb): The scfg field is now a pointer, so that we
	don't have to expose the struct isc_session_cfg struct in isc.h.
	Added the event_source field.
(isc_listentcp): Added the cb argument.
(isc_openfd): Function removed.
(isc_openfile): Ditto.
(isc_openudp): Ditto.
(isc_close): Ditto.
(isc_sessions): Ditto.
(isc_getnextevent): Ditto.
(isc_wait): Ditto.
(isc_dispose): Ditto.
(isc_send): Ditto.
(isc_sendto): Ditto.
(isc_reallocmsg): Ditto.
(isc_copymsg): Ditto.
(isc_mkstrmsg): Ditto.
(isc_createudp): Ditto.
(isc_bindudp): Ditto.
(isc_connecttcp): Ditto.
(isc_connectudp): Ditto.
(isc_listenudp): Ditto.
(isc_copyaddress): Ditto.
(isc_getservice): Ditto.
(isc_newhandler): Ditto.
(isc_freehandler): Ditto.
(isc_copyhandler): Ditto.
(isc_pushhandler): Ditto.
(isc_pophandler): Ditto.
(ISC_HCALLFUN1): Macro removed.
(ISC_HCALLFUN2): Ditto.
(ISC_HCALLFUN3): Ditto.
(enum isc_read_result): New enum.
(isc_read_data): New function.
(isc_cfg_fd_relocate): Ditto.
(isc_set_read_callback): Ditto.
(isc_accept_callback): New callback function.
(isc_write_error_cb): Ditto
Moved some constants to intern.h:
(ISC_DEFAULT_MAX_MSG_SIZE): Moved.
(ISC_DEFAULT_MAX_QUEUED_SIZE): Moved.
(ISC_DEFAULT_MAX_DEQUEUE_LEN): Moved.
(ISC_DEFAULT_MAX_OPEN_RETRIES): Moved.
(ISC_DEFAULT_MAX_BACKLOG): Moved.
Moved some structs to intern.h:
(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 to intern.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 from intern.h:
(isc_setallocfn): Moved.

    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.