Modifying recotana's OSC library for 0021

I noticed today that Recotana's OSC library doesn't seem to be working with the new Arduino IDE (0021). It seems as though a lot of the functions have changed in the W5100.c file in the Ethernet library. I've been replacing some of the functions with one I know but have got stumped on a few.

Sn_IR(socketNo) is the old function. What do I replace this with? getSn_IR( socketNo ) also is missing. IINCHIP_WRITE is another function that has disappeared.

There doesn't seem to be very much commenting in the new W5100 files so I don't really know what everything does. Does anyone out there have any ideas?