Added a wrapper package that creates symlinks to OpenSSL libraries with
the actual versions, because we have 1.0.2 with .so-suffix .1.0.0 and
cl-async-ssl is unhappy because of that.
I continue to dislike cl-postgres and simple-date upstream packaging.
Escape things by default in derivation names (i.e. digit cannot be the
first character etc.)
Update Quicklisp (tracking upstream); list new missing dependencies
Add some minimal README about ql-to-nix
