Fix the server_merge so that the memory pools and mutexes that were created...

Fix the server_merge so that the memory pools and mutexes that were created during the server_create, are used.  Allow the settings that can be overwritten in a vhost to use the vhost values

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@386698 13f79535-47bb-0310-9956-ffa450edef68