Display a list of all dynamic libraries known to Emacs.
(These are the libraries listed in `dynamic-library-alist'.)
If optional argument LOADED-ONLY-P (interactively, prefix arg)
is non-nil, only libraries already loaded are listed.
Optional argument BUFFER specifies a buffer to use, instead of
"*Dynamic Libraries*".
The return value is always nil.
(fn &optional LOADED-ONLY-P BUFFER)