Plain Lua + FFI support

[pocomane]

It seems to me that a slight modification make this compatible with lua (not luaji) + ffifb (https://github.com/facebook/luaffifb):

index b831689..ece7b70 100644
--- a/glfw.lua
+++ b/glfw.lua
@@ -29,7 +29,6 @@
 ]]

 local ffi = require 'ffi'
-local jit = require 'jit'

 local mod = {} -- Lua module namespace
 local aux = {} -- Auxiliary utils
@@ -1042,9 +1041,12 @@ function bind_clib()
   -- Luajit does not allow to call Lua-callbacks
   -- from JIT-compiled C-functions, so we
   -- manually turn off JIT for them
-  jit.off(funcs.PollEvents)
-  jit.off(funcs.WaitEvents)
-  jit.off(funcs.WaitEventsTimeout)
+  pcall(function()
+    local jit = require 'jit'
+    jit.off(funcs.PollEvents)
+    jit.off(funcs.WaitEvents)
+    jit.off(funcs.WaitEventsTimeout)
+  end)

   -----------------------------------------------------------
   --  Extra functions

[Playermet]

Very thanks! I will do several tests and add it soon.