Hooking GetUserName* GetComputerName* APIs. Closes #28. Must be verified...

..., has inconsistent arg count. At the moment I am not sure if the bug is in my code or in the logging function.
*LPTSTR* is a wrapper around ascii/unicode strings depending on whether *_UNICODE* has been defined when including some headers, or something along these lines. Here you'll want to use, e.g., *PCSTR* for the ascii function, and *PCWSTR* for the unicode function. (Just to be clear that one is ascii and the other is unicode.)
I guess that, given the types are not really checked, it doesn't matter when compiling, but it's still good to have correct types :)