Module introspection library.
(module-lib-dir file mod-name)
(module-include-library-declarations mod)
(module-shared-includes mod)
(analyze-module name [recursive?])
(module-ref mod var-name . o)
(module-contains? mod var-name)
(procedure-analysis x . o)
(available-modules-in-directory dir depth res)
(modules-exporting-identifier name)