Use explicit externs list.

Apparently some recent versions of the compiler still don't support
externs wildcards.
UNDO SOME DAMAGE
Moar change. Such churn. Wow.
Working scanner ftw
Working scanner ftw
Fix types of things in Scanner
Hack up a testing framework with jsunit
Fix test stuff yay
Now with new and improved InstaLoad technology
Add more Scanner tests; fix bugs revealed.
Clarify some testing stuff
disopinionization
demarket
boring text
Build clarity
Handle missingle files in test server with 404
Add DOT token type
Clean up and implement the rest of the token language
really i know how to spell
Avoid copying dot-files when pulling closure-library into out/