Access log files are not flushed whole-lines at once

[rjek]

The access log file appears to be flushed at byte boundaries, not line boundaries. These leads to some odd effects when using "tail" with log files, as you get partial lines emitted: you have to wait for the next lump of data to be flushed before you get to see the rest of the line

Initially I thought this was a laggy ssh session, and while it's only cosmetic, it would be nice if the logs were flushed up to the next log line rather than flushing partial lines.

Running git master. Ish.