Silence various warnings when doing a 64-bit build with MSVC: Those warnings can only _really_ be fixed in "novem" (so, don't silence them there)
Silence various warnings when doing a 64-bit build with MSVC: Those warnings can only _really_ be fixed in "novem" (so, don't silence them there). 
Use vsnprintf (more portable) in stead of _vsnprintf, except on MSVC