[Glass] new tODE features available (on dev branch)

[Dale Henrichs via Glass]

With PR #208[1] , I've expanded the support for classes with class 
history to include being able to identify classes that are not reachable 
from Smalltalk (or the user's Symbol List) ... the classes are display 
as ClassName{class-oop} ... I've also switched the `bu` command to 
produce compressed backups by default (--uncompressed will give you 
uncompressed bacups). I also added a `bu validate` command to verigy the 
readability of a backup file.

See the PR[1] for additional details.

There are a couple of minor client-side changes, you can use the 
`updateClient` tODE shell builtin to update the client (save the image 
after update finishes) and use `project load Tode` to update the server.

Dale

[1] https://github.com/dalehenrich/tode/pull/208