Total sample depends on linux build paths to dartc

[DartBot]

This issue was originally filed by zundel@google.com

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The server infrastructure of Total re-generates the client JS code
on the fly by invoking dartc. There are 2 issues with this:

1. Some people might want to use frog
2. The path specified is Linux specific - running on a mac requires a different path.

One idea is to take the auto-regeneration feature out and replace it with a mechanism that compiles the client code once before the server is started. Another is to make the server flexible enough to support frog or dartc, and support them on differnt environments.

I think we are touting the dart editor for a compile/edit/debug cycle, so what I'm going to do first is try that out and document it. If that works, then I'll remove the compile meechanism from the server.

[DartBot]

This comment was originally written by zundel@google.com

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Added Fixed label.