[9fans] fossil changes

[9fans] fossil changes

[rsc]

Made a bunch of pending fossil changes.

	. file - doesn't stop on errors anymore
	users - new, hopefully less confusing syntax
	who - prints list of users on each connection
	fsys name df - prints disk usage
	fsys name halt - stops file system activity
	fsys name unhalt - resumes file system activity
	fsys name sync - wasn't flushing metadata, now is
	fsys all - means apply commands to all fsys
	fsys main open - reads /active/adm/users by default

All documented in fossilcons(8).

For people running fossil, the only backwards-incompatible
change is that if you have a line

	users /active/adm/users

in your fossil startup file (and you probably do),
the command will now fail due to the new users
syntax.  However, that won't matter because:
	* `.' will ignore the error in the script
	* the opening of main will have loaded
		/active/adm/users already anyway.
So you can delete the line after you start running
the new one.

Russ