hacks to make julia run on atom N270 architecture (32bit, running ubuntu 9.04)

With regard to Issue #3421 

Note this Pull Request is being sent for information purposes only. That is, so you can see what I needed to do to make julia install on atom N270 architecture (32bit, running ubuntu 9.04). It contains quick and dirty hacks, which should be made (much) better before being integrated into your code base (they will likely break things for other systems). I'm sending this so you know were the code breaks and how I fixed it---not because I think it is good enough to release.