Remove unused constants.


git-svn-id: https://svn.apache.org/repos/asf/tomcat/jk/trunk@1555405 13f79535-47bb-0310-9956-ffa450edef68
Introduce and use everywhere AJP packet size
constants.


git-svn-id: https://svn.apache.org/repos/asf/tomcat/jk/trunk@1555407 13f79535-47bb-0310-9956-ffa450edef68
Align max_packet_size when set through the status
worker in the same way as when set from config file.


git-svn-id: https://svn.apache.org/repos/asf/tomcat/jk/trunk@1555409 13f79535-47bb-0310-9956-ffa450edef68