[pacman-dev] New Optional Dependencies Aren't Logged.

`pacman -Su' suggested an optional dependency of gst-plugins-bad. I looked to see what that was and didn't want it. Later, due to discussion on the local LUG IRC, I wanted to look up what package had the new optional depends but found /var/log/pacman.log didn't record it. Please consider logging them. Looking at the optional depends of all the upgraded packages, I think it was webkit2gtk, but if it were logged then I could check if there were any new optional depends in the more general case, e.g. looking back in time. -- Cheers, Ralph.