Tamarin and Apache Flex Compiler (Falcon)

I'm trying to build the obsolete project Tamarin. Here is the Mozilla archive:

Tamarin - Archive of obsolete content | MDN

and build instructions:

Tamarin build documentation - Archive of obsolete content | MDN

I need to check out the actionscript compiler and I tried, but get a authentication error with:

svn co http://opensource.adobe.com/svn/open...box/asc-redux/ asc

I used to work for Adobe in 2006 and no I'm not lying. Can I sign up for svn acccess? A public account?

Also I am interested in the Flex compiler or Falcon. Any information about Tamarin and Falcon would be greatly appreciated. I know Falcon is on github.

My personal goal would be to maybe sometime have a browser with a only actionscript built into the browser. Like JavaScript is now. something like SpiderMonkey.