Clean up test cases

Author: Ryan Nevell

Examples/test-suite/lua/lua_lightuserdata_runme.lua

@@ -1,5 +1,5 @@
 require("import") -- the import fn
-require("lua_lightuserdata") -- import lib
+import("lua_lightuserdata") -- import lib
 
 local t = lua_lightuserdata
 local d = t.get_lightuserdata()

Examples/test-suite/lua_lightuserdata.i

@@ -2,15 +2,16 @@
 
 %native(get_lightuserdata) int get_lightuserdata(lua_State* L);
 %{
+static int foo;
 int get_lightuserdata(lua_State* L)
 {
-  lua_pushlightuserdata(L, reinterpret_cast<void*>(0x123456));
+  lua_pushlightuserdata(L, &foo);
   return 1;
 }
 %}
 
 %inline %{
 bool check_lighuserdata(const void* d) {
-  return reinterpret_cast<void*>(0x123456) == d;
+  return d == &foo;
 }
 %}