On the trunk:

mod_http2: connection IO event handling reworked. Instead of reacting on 
     incoming bytes, the state machine now acts on incoming frames that are 
     affecting it. This reduces state transitions. 



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1840010 13f79535-47bb-0310-9956-ffa450edef68