New UFFI version (0.2.10) available

I've released a new version that fixes the variance in signed/unsigned
in foreign-strings. With this, all examples now work on CMUCL.

I added a section on design priority to the manual. You can browse this 
section of the manual online:
  http://uffi.med-info.com/manual/x91.htm#AEN99

I recommend reading this section and I request comments on this section.
There are some very basic design choices in achieving cross-implementation
compatible code. Basically, I'm choosing implementation-specific
optimizations at the expense of programmer convenience. Let me know if you
agree or disagree with this choice.

Thanks for your interest in UFFI.

-- 
Kevin Rosenberg
kevin-HJRc7zDS/[email protected]