I would install it, but I don't have commit access.
Ah, OK. Then a couple of minor comments:
- Consider renaming `find-library-read' to `find-func--read-library' to make it internal. It's probably not intended as a public API.
- (funcall 'foo ...) should be written as (foo ...)
- Please revert unrelated whitespace changes (changing tabs to spaces in find-function-do-it)