[Lua] Add keyword warnings for Lua keywords and Basic Functions.

Examples/test-suite/lua/keyword_rename_runme.lua

@@ -7,10 +7,6 @@ local env = _ENV -- Lua 5.2
 if not env then env = getfenv () end -- Lua 5.1
 setmetatable(env, {__index=function (t,i) error("undefined global variable `"..i.."'",2) end})
 
-
--- assert(kn.end(5) == 5) -- Curretly  SWIG/Lua doesn't rename keywords
--- assert(kn.nil(7) == 7)
-
--- But you can always access wrongly named members using string constants
-assert(kn["end"](5) == 5)
-assert(kn["nil"](7) == 7)
+-- Check renaming of Lua keywords
+assert(kn.c_end(5) == 5)
+assert(kn.c_nil(7) == 7)