iproute2: 2.6.19 updates and Mobile IPv6 support for ip command

Hello,

These are iproute2 updates:

o Kernel header updates for 2.6.19
o libnetlink header updates to fit with 2.6.19 kernel
o Mobile IPv6 xfrm support for ip command

Since I could not build with the define nor find it on the kernel tree, It also contains a patch which disable FIB_RULE_INVERT.

Please review and apply them.

Thanks,

Masahide NAKAMURA