Many changes and updates for handling new types. The db now has types like 'pc600', 'pc850', and 'dnard', and each type has a class like 'pc' or 'shark'. This updates scripts that use types to use classes where appropriate, and to handle the new types where there were hardcoded things that couldn't be eliminated right now.

to tell it how to parse interswitch links from assign.

It still assumes a single VLAN domain.

a bootstatus field to the nodes table. os_setup sets this to one of
okay, failed, unknown. This is to be used with the still to be defined
method of specifying certain nodes that can fail reboot on experiment
creation. Right now sharks are wired to this, and this information is
presented in the web page. Its also essential for the batch system,
which needs to consider nodes that failed to reboot, or else batch
experiments would never end. Might still need a way for an experiment
to tell the batch system its done though.

and vname updating in assign_wrapper.

software.

them on the first run to accurate predictions.

fixes we missed.

tbprerun - Fixed estimations to be slightly more accurate.  Hard to get
complete accuracy without duplicating much of assign_wrapper.  This'll
probably change in someway in the near future.