Signed-off-by: Stephane Glondu <steph@glondu.net>

This changes the semantics of filters: RTPROT_BOOT will now be redistributed,
but only if it is explicitly mentioned in a redistribute filter.

Hopcount a kernel priority have nothing in common.

It still won't work, but will at least compile.
Reported by Mathias Mahnke.

From Michael Grant.

This is an incompatible change.