[AgileWiki] rebuild design flaw

[Bill la F. <bil...@su...>]

I cheated a bit when I wrote the rebuild logic--I made the entire 
rebuild run under a single transaction. Hey, its a whole lot faster that 
way.

Now its catching up with me. When I installed alpha29, I downloaded all 
the log files. I just tried to do a rebuild and ran out of memory.

So now I can either change the design (oo, but its fast the way it is) 
or see if I'm saving data for the commit that isn't needed when running 
rebuild.

Bill