Reference for unit 'lualib': Procedures and functions

`luaopen_base`
`luaopen_debug`
`luaopen_io`
`luaopen_math`
`luaopen_string`
`luaopen_table`
`lua_baselibopen`
`lua_dblibopen`
`lua_iolibopen`
`lua_mathlibopen`
`lua_strlibopen`
`lua_tablibopen`