Remove unnecessary IDE warning

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1637916 13f79535-47bb-0310-9956-ffa450edef68
Make SocketWrapper abstract
Rename SocketWrapper and sub-classes for consistency

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1637917 13f79535-47bb-0310-9956-ffa450edef68
Remove unnecessary Constants class.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1637918 13f79535-47bb-0310-9956-ffa450edef68