math.ceil() is very slow


![slowCeiling](https://f.cloud.github.com/assets/1892829/165762/ada347c4-7972-11e2-9e61-dd86dfaac954.png)
math.ceil is almost 100% of the cpu cost of pipePowerWood and transport.pipeTransportPower

(full nps from 
https://www.dropbox.com/s/01ywgc8lnyr2es2/1361111585024.nps?dl=1
several hundred k items extracted from ex-dim barrels, sent to a set of act's, crafted to blocks, and then sent back to barrels.

sendStack->queueRoutedItem() is to do with logistics HUD display, and is being worked on lag-wise also.)