On the trunk:

mod_http2: h2 workers with improved scalability for better scheduling
     performance. There are H2MaxWorkers threads created at start and the
     number is kept constant. 



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1788672 13f79535-47bb-0310-9956-ffa450edef68