slotmem improving doall

[jean-frederic clere]

Hi,

I would like to change the doall / ap_slotmem_callback_fn_t logic.
For the moment we can't stop the doall loop, but it could be interesting 
to do so (for example while search for a value in the slotmems).
My idea is to return APR_SUCCESS when done and APR_INCOMPLETE if we want 
to go on doing the loop.

Comments?

Cheers

Jean-Frederic