20040906
	accept_conns() trivial correctness fix: EINTR return from accept should
	force continue rather than break in handling loop.

	fail_on_fdne() is now file_exists() with a slightly different API.

20040818
	Use inet_aton rather than custom function; daemon.[ch] removed.

20040817
	ifchd no longer logs a "FATAL - select returned an error!" when it
	is -KILL'ed.

20040626
	pending_exit is now static volatile sig_atomic_t rather than
	static volatile int for pedantic correctness issues.

20040614
	Added --interface (-i) option that allows one to restrict the
		interfaces that ifchd clients are allowed to modify.  I
		reccomend that this flag be used to further mitigate the possible
		effects of a compromised client.  By default, all interfaces
		may be modified by clients.
	Minor cleanups.
	Clear corresponding namesvrs and domains on socket disconnection.

20040613
	Factor out Linux-specific code into linux.c.
	Nameservers and search domains now tracked per-connection to
		prevent races where a client could force a writeout of data
		provided by another client.
	Interface name now cleared on connection close.
	Make all headers idempotent.
	Minor improvements to error messages.

20040612
	Removed iffd[] array; this change makes the state machine action
	functions (perform_*) depend on less external state.

	HOSTNAME command now supported; it is not enabled by default.
	If you wish for remote daemons to be able to change the hostname
	of the local machine, use the --hostname (-o) option.

20040610
	Added MTU support.

20040609
	Robustify so that suicide() isn't called at every possible failure.
	Harmless failures will now simply print an error to the log.  Risky
	or severe errors still suicide().

20040608

	Added support for resolv.conf, namely "nameserver" and "search" entries.
	Make strlist more robust and paranoid.

20040607

	Improved accept() code to be much more robust; it can now properly error
	recover.  I hope this will fix the elusive random-exit problem that
	plagues machines running the 2.6 kernel.

	Refactored dispatch_work() to be cleaner.