The current library index is a start, but it would be nice to have a way of browsing (both within the editor and from the web) all symbols.

Thus an index could be generated during make-dist.sh.
- run compile-libcl (into .tmp as now)
- iterate over all the packages in libcl
- for each symbol, collect boundp, fboundp, docstrings, etc.
- dump a DB file
- dump HTML/PDF files and indices

Then LibCL could provide an apropos to interact with this database before loading any packages.