system programs. Build two versions of the event library, one for non
threaded programs and another (libevent_r.a) for threaded versions.
Remove all that -pthread goo from all of the makefiles, except for the
scheduler (which is threaded); it gets linked as before, but with
-levent_r instead. If you try and use the threaded API without the
proper link, the library will print an error message and quit.

Move pid/eid to beginning of subject line in the email that gets sent... easier for us to see who it was for. (Pine only shows first ~35 chars of subject in index list.)

 A couple of UI fixups:

 - Added "you're over the trashcan" visual clue when dragging thingees into the can.
 - Clicking a node to drag it from the panel now visually selects it
   (this is subtle, but more correct.)

For experiments that have nodes allocated, if there is no 'last login' data, show date and 'Swapped In' for easier comparison and for faster idle checks. Previously, you couldn't tell if they had recently swapped in, or swapped in days ago and never used the nodes without zooming in on the experiments individually.

comma (or space) delimited list of tags for each member of the address
tuple. So, if you wanted to subscribe to LINK and TIME events, you
would set the address tuple like this:

	tuple->objtype   = "TRAFGEN,TIME";

and the subscription clause that would be passed to elvin would look
something like this:

	( OBJTYPE == "TRAFGEN" || OBJTYPE == "TIME" )

This should make it easier to subscribe to multiple types of events,
without having to get all of them. For example, the trafgen agent
could subscribe to TIME events and get the TIME START event that is
now sent once all nodes report ISUP

events in the DB!

the nodes are up and that events are starting. The objtype is "TIME"
(TBDB_OBJECTTYPE_TIME from tbdefs.h) and the eventtype is "START"
(TBDB_EVENTTYPE_START from tbdefs.h). How to subscribe to this event
will be forthcoming.

other!

paths filled in by configure are correct.

Bug fixes for the FreeBSD version of healthd.  The Heceta-2 chip was not being properly initialized (PC850s).  These changes also internalize the initilization, so the external program that used to do it is deprecated (h2init).

assign_wrapper.in: Hack in a change that ensures a delay node is
created for any link on which an event is posted (up,down,modify),
no matter what its initial parameters are. ie: If a link is created
with no delay, but there is an event that adds a delay later, then we
must drop in a delay node. Same for up/down on a link. We do this in
the delay node. I am reasonably confident that this change is fine for
duplex links, but I am less sure of the effect on lans!

eventsys_control.in: Checkpoint latest changes. Add "replay" option,
which right now just stops and starts the event scheduler so that it
reloads the entire event list. Add check for existing experiment, and
that the experiment is either active or swapping (do not want to start
a scheduler for a swapped out experiment!). Add check to see if there
are any events, and skip startup if there are not events in the DB.
Lastly, get very serious about preventing more than one scheduler from
being started, either by accident or intentionally. My protocol is to
lock the table, grab and set the pid to -pid, test the pid for a
positive value, and if positive, send the scheduler a kill(TERM) so
that it can cleanup, clear the pid to zero in the DB, and exit. This
approach ensures that we do not try to send a kill to a pid that is no
longer active or owned by the user (this last part is not really
necessary cause of how pids are reused, but it was easy to add so why
not).

exports_setup.in: Trivial change to make it easier to turn this on
temporarily in devel trees.
named_setup.in: Ditto.

node_reboot.in: Add call to TBdbfork() in child cause of apparent DB
connection problems across forks. In the child, set the eventstatus
for the node to REBOOT if successful (not this event status stuff is
temporary, will be recast in next set of revisions).

GNUmakefile:  Add new controlling program, eventsys_control.
power.in:     Ditto previous comment about REBOOT.
os_setup.in:  Non event system cleanups.
tbend.in:     Add DB cleanup of the new virt_trafgens and eventlist tables.
tbprerun.in:  Ditto.
tbreport.in:  Print out the event list in a pretty print format.
tbswapin.in:  Add call to start the event system. Also a big fix; move
              the named script up above the os_setup so that the named
              tables have been updated by the time the first node
              reboots. I noticed that nodes were failing on gethostbyname().
tbswapout.in: Add call to stop the event system.

them into a private header file.

its meaning!

export that stuff.
Add signal handlers to ensure that INT/TERM/HUP signals are caught and
that we exit cleanly (clearing the pid from the DB).
Minor rework for DB table structure and the switch from per-experiment
event tables to a single event table indexed by pid,eid.

are gone!

recreating the connection to the DB across a fork. It appears that
with the connection shared, DB queries can fail. It would be nice if
PERL had fork handlers.

Add TBSetNodeEventState() and TBGetNodeEventState() library routines,
and some constants for the event tags.

Beef up the experiment access check code to handle destroy as a
distinct case.

tevd: Proper daemonization code, controlled by debug option.

delay-agent/{callback,main}.c: Minor -Wall fixes.

tbsend.c and tbrecv.c, which are trivial examples of how to send
and receive a sample event.

already a pid associated with the experiment (unless clearing it to
zero). This enforces the restriction that there should only be a
single event scheduler running for an experiment!