I found it. It was in the w5100.h file starting at line 253 in my version. The new compiler version did not like the old way.
The old code:
#define __SOCKET_REGISTER16(name, address) \
static void write##name(SOCKET _s, uint16_t _data) { \
writeSn(_s, address, _data >> 8); \
writeSn(_s, address+1, _data & 0xFF); \
} \
static uint16_t read##name(SOCKET _s) { \
uint16_t res = readSn(_s, address); \
res = (res << 8) + readSn(_s, address + 1); \
return res; \
}
The new code:
#define __SOCKET_REGISTER16(name, address) \
static void write##name(SOCKET _s, uint16_t _data) { \
writeSn(_s, address, _data >> 8); \
writeSn(_s, address+1, _data & 0xFF); \
} \
static uint16_t read##name(SOCKET _s) { \
uint16_t res = readSn(_s, address); \
uint16_t res2 = readSn(_s,address + 1); \
res = res << 8; \
res2 = res2 & 0xFF; \
res = res | res2; \
return res; \
}
Works great now! 
This means I have a current version running!
One bug/fix in avr-libc, one in wiring.h, and one in the ethernet library.