f7/rawhide utrace

[Roland McGrath]

The mondo powerpc update upstream today will take some substantial merging
and rejiggery work, and I might do something different tonight instead.
If you rebase rawhide before I get there, you will hit trouble.  The
conflicts outside powerpc are simple.

I made a 2.6.22/ backport from the 2.6-current patches (probably same set
now in rawhide).  That should do fine for f7.


Thanks,
Roland