Merge r1768245, r1770828 from trunk:

heh... bring memcache up to redis :)
mod_status info

From Norm:
NWGNUsocachmem needs to find mod_status.h

Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1774016 13f79535-47bb-0310-9956-ffa450edef68