This is part of cleaning up the name space of pubsub.  Previously, this
program was getting the "info" call from libpubsub and that version is going
to become private.  So use the one in libtb instead.

Includes hack to "fix" upstart dependency problems:

A) eth* interfaces are probed by ifupdown serially instead of in
   parallel.
B) Legacy initscript support waits for the the control net probe
   to finish (with either success or failure) before running legacy
   initscripts.

The stand-alone desktop client is no longer supported - the GUI applet
is nearly as good (just doesn't allow user to ssh to the nodes), and
actually works.

Contributed by IBBT/UGent

  As you can see, most of those are in use even during our
  periods of "light" usage.
At Mike's request since "it isn't true now.  It will probably be true
again, but it will take awhile..."

That is when more than a fixed threshold of nodes (0.05 for now) are
in an invalid state for any particular class (ie "pc3000s", "d710s",
etc) only invalid that class for the time period, instead of all the
plot data.

Along the way fix various bugs with handling NaN (how invalid states
are flagged).

to avoid running out of memory.

a link or lan fall on a shared node. I messed up the test in a
previous commit.

around; Remove the trac ticket link and replace with a pointer to
the emulab-users help forum.

the same vlan to be on multiple phys devices.

Once we determine which modules we need, parse the actual .ko files for
'firmware=.*' strings.  These provide the path(s) to that module's
firmware, relative to /lib/firmware.  Remove all firmware from the
output directory then copy in only the files we need.

Add '-c' option to gen_initramfs.sh to choose the compression type.
Currently, it supports the following types: gzip (default), bzip2, lzma,
and none.

The toplevel Makefile now has a variable to specify the compression type
of the initramfs, and passes it to gen_initramfs.sh.  Currently it is
set to lzma by default.

The following components of the Linux MFS were updated:

Linux kernel => 2.6.32.9
buildroot => 2010.02
uClibc => 0.9.30.2
busybox => 1.16.0
binutils => 2.20
gcc => 4.2.4
gmp => 4.2.4

The Dell Optiplex reboot patch was removed from the kernel build as it
is already present in 2.6.32.9.

The update was done because:
- The kernel was over a year old and significant updates have happened
  since then.
- A few new useful features were added to busybox
- The kernel now supports bzip2 and lzma compression for itself and
  initramfs in addition to gzip.  Using lzma instead of gzip saves us at
  least 1.5 MB for the kernel+initramfs, possibly more.

FEDORA8-OVZ-STD.

Add -s option for initial swapin on new testbed.

the number is fixed and small.