Using WinInet HTTP functions in Full Asynchronous Mode

[Gintaras]

I don't want to learn how to use wininet functions in async mode because QM is multithreaded program, you can use wininet functions in sync mode in another thread to avoid blocking your thread. Creating and testing Http etc classes was quite much work for me. In async mode it should be even more difficult. When we already have sync functions, and can use multiple threads, i don't want to create another Http class for async mode.