Baby dyngen

Substantive (if demo quality) progress has been made on the dynamic code translator, dyngen. Some demo code is available here (requires upstream dynld code, mirrored here). Commentary about the demo, dyngen, and next steps has been shunted to another file so as not to clog the blog page.

Some updates have been made to the strategy paper to talk about a new translation buffer strategy (thanks to Eckhardt) and say a bit more about dynld, including discussion of an extension to make the immediate value folding dance easier for dyngen.