[9fans] updates on sources

["Russ Cox" <rsc@plan9.bell-labs.com>]

I pushed out a few big updates this evening.

 *	The %s and %S verbs no longer require the string
	to be nul-terminated if a precision is given.
	This is the way the old print library behaved,
	and it's useful when you're doing various text
	processing.  Thanks to rog.

	This is not actually that big a change except that
	it changes every binary in the system.  Sigh.
	Eventually the print library will stabilize.

 *	The libmemdraw and libmemlayer libraries have
	been updated to handle the full suite of Porter-Duff
	compositing operators.  Devdraw is updated too
	(it's a backwards-compatible change to the protocol)
	though draw(3) and libdraw are not yet updated.
	That will happen in the next few days.  I'll post
	more then.  Thanks to Vita Nuova (specifically jrf,
	I believe) for the code.

 *	The kernel build process has changed a bit, mainly
	to make it easier to put all sorts of cruft into the root
	file system.  Details in an email to follow.

 *	More venti tools.  Details in an email to follow.

 *	Might as well mention that ssh supports agent
	forwarding.  ssh -f unix will set up agent forwarding
	so that if you run "ssh elsewhere" on the unix machine,
	the RSA authentication happens via factotum.
	This is a few weeks old, but I never mentioned it.

 * 	I installed new kernels into /386.  If you have done
	a recent install (so echo $bootfile says
	sdC0!fs!/386/9pcdisk instead of sdC0!9fat!9pcdisk.gz)
	then you'll boot the new kernel automatically when
	you reboot.  Otherwise you'll need to copy it to 9fat.

	If you're booting striaght out of /386 and find that
	the new kernel doesn't work for you, edit your plan9.ini
	(or copy c:/plan9/plan9ini.bak to c:/plan9/plan9.ini
	and edit that) and change the boot file to /386/_9pcdisk.gz,
	which is the old kernel (and then tell us; mail 9trouble).

	As a reminder,

		pc/bootfloppy /dev/fd0disk plan9.ini

	can be used to make a new boot floppy.

 *	Sources is now running the 4e file server as a
	field test.  If you see anything strange, please
	let us know.

As usual, if you don't want to download the changed
binaries one by one, you can download a bleeding
edge CD image from the updates page and use that
(usually they're updated a few hours from now,
but I just did a manual update, so it's there as you
read this).

Enjoy.

Russ