Add new syscalls:
tkill, waitid, fadvise64_64, set_tid_address, tgkill, mbind,
[sg]et_mempolicy, {,l,f}{set,get,list,remove}xattr,
timer_{create,settime,gettime,getoverrun,delete},
clock_{settime,gettime,getres,nanosleep}
Committed-by: Matthew Wilcox <willy@parisc-linux.org>