Vertical bar removed from syntax of vararg table

The syntax 'function foo (a, b, ...arg)' is already used by JavaScript
for this same semantics, so it seems natural to use the same notation in
Lua.

testes/memerr.lua

@@ -126,13 +126,13 @@ testamem("coroutine creation", function()
 end)
 
 do  -- vararg tables
-  local function pack (... | t) return t end
+  local function pack (...t) return t end
   local b = testamem("vararg table", function ()
     return pack(10, 20, 30, 40, "hello")
   end)
   assert(b.aloc == 3)   -- new table uses three memory blocks
   -- table optimized away
-  local function sel (n, ...|arg) return arg[n] + arg.n end
+  local function sel (n, ...arg) return arg[n] + arg.n end
   local b = testamem("optimized vararg table",
         function () return sel(2.0, 20, 30) end)
   assert(b.res == 32 and b.aloc == 0)   -- no memory needed for this case