Move compact vm config from web_ui to the unittest package.

Move compact vm config from web_ui to the unittest package.

Committed: https://code.google.com/p/dart/source/detail?r=16894

[Siggi Cherem (dart-lang), 2013-01-10 00:02:06]

this configuration is exactly what we had in web ui, but moved here so we can
share it with others.

It prints a progress line that is updated in place, ensuring that the line
contents are at most 80 columns.

[gram, 2013-01-10 00:16:29]

lgtm