Re: [libvirt] PATCH: Improve some remote driver error messages

Bug reports from users have shown diagnosing problems with the remote driver are quite tricky, so I've been looking at improving its error messages where possible. There's a number of places where we simply pass in strerror(errno) as the only data in virRaiseError. This doesn't let us narrow down just which call failed - we just get a generic message "Permission denied" or "Connection refused" with no clue what was being tried.