passing extra libraries when loading

[Alfred M. Szmidt]

   Have you tried explicitly loading the unlinked libraries beforehand with
   LOAD-FOREIGN-LIBRARY?

That is a good suggestion, though...

Since I upgraded the machine to OpenBSD 6.5, I cannot reproduce the
failure:

  * (cffi:load-foreign-library "libreadline.so")
  #<CFFI:FOREIGN-LIBRARY LIBREADLINE.SO-431 "libreadline.so">

And cl-readline loads file (and works).  Seems that this got fixed in
OpenBSD on January 15th, 2019?  

  https://github.com/openbsd/src/commit/ec6ecd8a570a22f0beb913e5159081d1dba0241e#diff-a15e80c4efb3a0a48945a68239939c89

Thanks!