[luatex] [lucida] luatex hangs on lucida OT test file

[Akira Kakuto]

> In TeX Live 2017 and later, adding of DLL modules may
> become impossible or very difficult due to multiple Lua VMs
> problem, since I'll link lua52, luajit, and luaffi statically.

The "lltxplatform" module in the "lualatex-platform" package
by Philipp Stephani may be convenient to know system fonts.
Thus I linked it as a static module as an exercise.
For example, the following may work on windows in TeX Live 2017:

--
-- texlua test.lua
-- or
-- texluajit test.lua
--
require "lltxplatform"

local fonts = lltxplatform.get_installed_fonts()

for k, v in pairs(fonts) do
    print(k, v.name, v.path)
end

Best,
Akira