Change the rude.cfg script we generate to have a final "wait around" period
(MODIFY with 0 rate) before exiting.  We have it wait for the one-way latency
of the link.  This way, rude will not exit--and linktest will not do the
barrier synch--til all packets have had a fair chance to get to the other side.
This way we don't need a randomly chosen sleep after the barrier returns
and before we read the crude results.  Though rude already supported the
MODIFY with zero rate, I had to fix it since it didn't work if it was the
last command for the flow.

Adjust the timeout period for ping when doing the latency tests.  Previously
we waited for 3 seconds, now wait for max(RTT+1, 3) seconds.

Much more work will have to be done to support multi-second latencies
all around, this was just the low-hanging fruit.

widearea_nodeinfo table. This will be used to generate maps of the
planetlab (and probably RON, by zip code) nodes.

Also check for, and update in the case of, site chages.

Took a while, since I don't know python well, but I learned a lot in
the process.

Should help prevent our TCP tmcd from "wedging".

up an xterm. If you are not running X, will use a bit of applescript
to fire up a Terminal window.

Note that you need to be running an ssh-agent, started when you log
in. One way to do that is http://www.sshkeychain.org. There are
probably other ways as well, but not sure what they are. For
sshkeychain (which I installed and seems to work okay) here are the
instructions:

    * Copy SSHKeychain (SSHKeychain.app) to your Applications folder.
    * Run SSHKeychain. This should open a dock item and a statusbar item.
    * Click either the Statusbar Item, the Dock Item, or MainMenu and
      open the Preferences.
    * Open the Environment tab.
    * Enable "Manage global environment variables". This will make
      SSHKeychain available for other applications.
    * Open the keys tab and see if any of your keys are missing
        (~/.ssh/id_dsa and ~/.ssh/identity are default).
    * Add SSHKeychain to your Login Items in the System Preferences.
    * Re-login to make the global variables work.
    * Start up SSHKeychain, and you're set.

Woops, copied too much text, way back when.  ssh-mime-winxp.pl uses PuTTY, but rdp-mime-winxp.pl doesn't.

mysql 5.0 dumps the schema. What a pain in the ass.

Note that "timestamp" is basically impossible since its radically
different between 3.X and 5.X, which would break schemacheck on 3.X
based Emulabs. Since there are only three of them in the schema, I
changed schemadiff to not look too hard at them.

The ddijkstra function is copied from rc.route, needs to be refactored.

We are going to move to 6.1 soon anyway, I hope.

barrier mechanism.

have made any progress yet.

before doing the loghole, so that currently running programs get a chance
to finish up and close their logfiles.

 * Define vfork to fork. Why? Well starting at 6.X FreeBSD switched
 * its underlying pthread impl, and popen is broken in threaded apps,
 * since it uses vfork. I have no understanding of any of this, only
 * that avoiding vfork solves the problem.  We can back this change
 * out once we figure out a real solution.
 */

ssh-mime.pl to indirect telnet to the IXP board: return "ixpN-gw.emulab.net"
name as the gateway.  You can then convert that to an IP and subtract one
to get the IP to telnet to from the IXP host.

putting back the leading quote rather than removing the trailing quote.