Merge r1778319,r1778331 from trunk:

Use pconf as parent pool so mutexes get cleaned on restarts/reloads

name changes re: suggestion

Submitted by: jim
Reviewed by: jim, jorton, ylavic


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1781432 13f79535-47bb-0310-9956-ffa450edef68