That ClojureScript is actually a different project, and is a much less complete implementation. IIRC, it's not a true compiler like the new ClojureScript, but just uses macros to transform forms to Javascript. This announcement probably makes that one obsolete.
That ClojureScript is the (mostly experimental & now obsolete) work done by Chris Houser quite some time back. These two are not the same thing.
Thank both you and lukev for pointing it out.
Edit: Now they are both on the list. Gotta love Github's wiki.