hi,
I have changed the license statement in SLIME's README. it used to be:
------------------------------------------------------------------------ SLIME is free software. The source files are licensed separately for maximum compatibility with their host environment, for example slime.el is GPL and swank-cmucl.lisp is public domain. See the source files for more details. ------------------------------------------------------------------------
It is now this:
------------------------------------------------------------------------ SLIME is free software. All files, unless explicitly stated otherwise, are public domain. ------------------------------------------------------------------------
So if you've contributed code to SLIME and haven't supplied a copyright statement your code is now public domain. If you have an issue with this please bring it up asap.
For what it's worth the only files which were missing a copyright statement were swank-ecl.lisp, doc/Makefile, HACKING, NEWS, PROBLEMS and README. juan jose garcia (the original author of swank-ecl.lisp) is ok with the change so I don't think anyone should be surprised be this change.