Re: Adafruit servo tutorial for raspberry pi
That's the information I was looking for. According to those directory listings, you no longer have kernel support for PWM.
It would probably be easiest to get it back by installing a fresh version of Occidentalis on your SD card.
When you void a product warranty, you give up your right to sue the manufacturer if something goes wrong and accept full responsibility for whatever happens next. And then you truly own the product.