[rfc] extend cpuid from u_char -> int in struct thread; kproc_info and ule

[Adrian Chadd]

Hi,

https://reviews.freebsd.org/D955

This extends some cpuid fields from u_char -> int.

This does change the ABI a little - it leaves the older u_char fields
in place but they'll wrap at CPU IDs > 255.

Thanks,



-a