Removed shared key?

For some reason i2c tools don't work with -shared as
a compiler flag. I assume it must mess with the mmap
against the memory location, though not really sure
how?
Adds priming for the second i2c bus (0)

The second revision of the Raspberry pi links the
i2c bus 0 to the s5 header on boot for the pi camera
support.
To re-route the bus and make it communicate
over the p5 header, it's required to set gpio pins
0 and 1 (representing the s5 header i2c pins) to std
inputs. This releases their alternate function and
when followed by priming the p5 gpio pins the bus
should now be correctly routed.