Move min,smax and hmax params to worker, so they can be set

before the connection pool is created

Added init_conn_pool to worker.
Connection pool will either use reslist (if thread number > 1)  or single connection.

Submitted by: mturk


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@104569 13f79535-47bb-0310-9956-ffa450edef68