suffered some bitrot, but its now in sync and running on wa44, which
is destined to be the source of the next image.

Add new crontab file install to run a stub crontab inside jails;
basically, runs the atq and the newsyslog stuff. Other stuff is
turned off including periodic.

Change paths for the vtun debug files to /var/emulab/logs.

accounts on ops. Might be a while before I get back to this.

/users filesystem.

For the benefit of our users,
added 'reboot nodes in experiment' checkbox,
on by default, with a stern warning.

Added "check sitevars" to build, so we can be sure
other sites have all of the requisite site variables
when they install.

Some of it is new; some of it is modified versions
of Rob's schemacheck stuff.

Reorder some options to put force swap (idle-swap) up near the other swap button, so I don't accidentally use the wrong one.

Yep, years from now someone will look at this commit and wonder.

Clear out nsfiles and experiments, since tbend does not do that.
Clear out all users except the person running the test.
DB size is now half of what it was; less churning!

Altered item headers so they don't look bad on modern browsers.

but with the bw shaping actually turned off. Internal option; not
planning to tell users about it.

on in production!

PER_VNODE_TT handles emulated links by simply adding up the total bandwidth
consumed by a vnode, and the total bandwidth available on each pnode. Of
course, this can lead to false positives (knapsack problem), but that's okay,
because it just means we won't bail up front - we'll have to do the full
annealing pass before we decide it's unmappable.

PER_VNODE_TT now also tries to figure out why a vnode is not mappable - if
there are _no_ pclasses that match one of the restrictions, it will print out
something like:
  *** No possible mapping for nodeA
      Too many links!
  *** No possible mapping for nodeB
      Too much bandwidth on emulated links!

This completes the following two items from assign_todo.txt:

6.   fix PER_VNODE_TT and vclasses
7.   fix PER_VNODE_TT and emulated vlinks

Alright...
'dump' -> 'snapshot'.

<pedantic>
Also, since we're inventing a verb, we invent usage too.
What works most of the time is
"snapshot *into* an image descriptor",
but for places where that won't work
(a good example is where you'd otherwise have to
 say 'snapshotting' or 'snapshotted'), we instead
"Obtain a snapshot *for* an image descriptor."
(or "are obtaining", or "obtained".)
</pedantic>

Script and datafile to ensure consistency of off-site sitevariable
definitions-- A lot like schemadiff.

database-fill was inappropriate, since you don't want sitevars
from the main site to overwrite remote sitevars.

Needs to be integrated into install process, probably in the
same way as schemadiff.

experiment, rather than as an administrator, which presents group
permission problems when the experiment is in a subgroup (requires two
additional group, whereas suexec adds only one group). That aside, the
correct approach is to run the swap as the creator. To do that, must
flip to the user (from the admin person) in the backend using the new
idleswap script, and then run the normal swapexp. Add new option to
swapexp (-i) which changes the email slightly to make it clear that
the experiment was idleswapped, and so that the From: is tbops not the
user (again, to make it more clear).

Changed language:
 + 'load' becomes 'dump'
 + 'create from <node>' becomes 'obtain from <node>'

project and group membership table. Add a comment below the table
about where to view/edit group membership and trust levels.

available, and check that against the types of the vnodes in the top file. This
way, we can bail early with a comprehensible error message if, say, there are
not enough pc850s free!

This fixes the following item from the todo list:
13.  add type-count checks

+ Added web page to do post-create loading of image from node.

+ Added menu item for page to Show Image Descriptor submenu.

+ Changed warning in newimageid_ez.php3 to suit new reality.

you're also showing them the red dot for a swap request. Second, add a
noignore flag for idle view (and a link to it from idle view) that will
show you all the idle expts, even if they have the idle_ignore bit set.

Nit; remove legend for "+" (recommended) on fields,
since there are no recommended fields!

is sent anyway!

per Eric's request. I had left out the trailing /images/.

be more to my liking.