pr4886: build-id enforcement

[Roland McGrath]

The bug is in the Fedora kernel.spec magic that rejiggers build IDs with
debugedit.  It stopped doing it right for vmlinux, so that the vmlinux load
image embedded in /boot/vmlinuz-* (what actually gets booted) has a
different build ID than the file installed in /usr/lib/debug/.../vmlinux.
I'll update https://bugzilla.redhat.com/show_bug.cgi?id=465873 when the
problem is fixed.


Thanks,
Roland