the cost of synchronized SMP proof updates far outweighs the value of having

100% accurate MaxRequestsPerChild.  
* it doesn't even count requests, it counts connections.  
* all it is is a number someone pulls out of a hat in an attempt to deal with
  resource leaks.  
i.e., no strong need for accuracy.  

atomic operations are relatively expensive and this is mainline code.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@558039 13f79535-47bb-0310-9956-ffa450edef68