[cffi-devel] a few tiny patches

I had the following in my queue: o more (gensym "NAME") and typo fix o clisp defcallback: free unless invalid (possibly from old image) o with-foreign-pointer [cmucl,sbcl]: forgot one instance of EVAL (constantp case) o TODO: foreign-alloc needs testcases o ffi:with-c-var's symbol-macrolet repeatedly applies foreign-value, avoid it Regards, Jörg Höhle.