Problems with destructor QtLua::Refobj in Windows OS

[avancinirodrigo]

To reproduce the error uncomment the line 513 of qtluaref.hh (libqtlua) and uncomment lua_close (L) of terrameLua.cpp within the block:

    if (!existWindows())
    {
        //lua_close(L);
        app.exit();
        return 0;
    }

Again compile the qtlua, qtluae and TerraME. Don't forget to replace the dlls.

This issue is related to #556