MMN major bump required; this API is altogether inconsistent, transparent

types should be opaque, opaque types should be transparent.

Solve one aspect, follow the _by_indexes() example for ap_get_scoreboard_worker
family of functions, and the primary one will now accept the abstracted conn_rec
value of sbh to find that connections slot.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@587770 13f79535-47bb-0310-9956-ffa450edef68