No longer need implementation specific UpgradeServletOutputStreams.
Collapse the unnecessary class hierarchy.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1637938 13f79535-47bb-0310-9956-ffa450edef68
Rename for clarity

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1637939 13f79535-47bb-0310-9956-ffa450edef68
Add a standard method for returning input to the SocketWrapper.
Use this to make the code consistent between upgrade processor
implementations.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1637940 13f79535-47bb-0310-9956-ffa450edef68
No longer need implementation specific upgrade processors. Collapse
class hierarchy into single implementation.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1637941 13f79535-47bb-0310-9956-ffa450edef68
Align message naming

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1637942 13f79535-47bb-0310-9956-ffa450edef68