divert resource management?

["Lars J. Aas" <larsa at sim dot no>]

I want to use diverts in some macros, and wonder if there is any
divert management system for reserving/freeing divert numbers in
autoconf (couldn't find any with a quick grep at least).  The point
is, if other macros are using diverts too, I don't want my diverts
to clash with those diverts and vice versa.  If I just pick a random
divert number off the top of my head, it's only a question of time
before diverts start to clash, which I'm really going to appreciate
debugging :-P  If divert numbers are reserved/freed dynamically OTOH,
this can be avoided.

  Lars J