[Lua] Removed generation of _wrap_delete_XXXXX (wrappered destructor) which was unused and causing warning with g++ -Wall.

Removed other unused warning in typemaps.i and other places.
Added Examples/lua/embed3, and run tests a few test cases.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@10402 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/lua/embed3/example.cpp

@@ -0,0 +1,25 @@
+/* File : example.cpp */
+
+#include <stdio.h>
+#include "example.h"
+
+void Engine::start()
+{
+    printf("[C++] Engine::start()\n");
+}
+
+void Engine::stop()
+{
+    printf("[C++] Engine::stop()\n");
+}
+
+void Engine::accelerate(float f)
+{
+    printf("[C++] Engine::accelerate(%f)\n",f);
+}
+
+void Engine::decelerate(float f)
+{
+    printf("[C++] Engine::decelerate(%f)\n",f);
+}
+