rb_tree methods export request

[Martin Devera]

Hello Andrea,

I write to you as to maintainer of rb_tree code in 2.4. I'm
just finishing module (QoS HTB scheduler) where I need to use 
balanced tree and your rb_tree implementation seems as the best
one for it.
Only problem is that rb_delete and athers are not exported so that
I can't use them in the module.
Is there some problem to export the symbols or should I duplicate
the code ?

thanks, devik
http://luxik.cdi.cz/~devik/qos/