Documentation

This function converts Windows paths between namespaces. More specifically It converts an explorer style path into a NT or Win32 namespace. This has several caveats but they are caveats that are native to Windows and not POSIX. See https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247.aspx. Anything else such as raw device paths we leave untouched. The main benefit of doing any of this is that we can break the MAX_PATH restriction and also access raw handles that we couldn't before.