Odd issue hidden by /tmp on /tmpfs

[Bruno Wolff III]

I had an issue with apache crashing and leaving behind core files and 
taking up a lot of space in /tmp. I didn't notice this before the switch 
over to /tmp on tmpfs. And afterwards I was having trouble figuring out 
where the extra space was being used since the /tmp fs hid the /tmp 
directory.

It might be nice to clean up /tmp before overlaying it on boot or maybe 
just outputing a log message of some sort if there is stuff in /tmp 
before doing the overlay.