Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56416
Align the AJP and HTTP connector implementations with the documented behaviour and use JVM defaults for socket linger.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1589672 13f79535-47bb-0310-9956-ffa450edef68
Merged revision 1589668 from tomcat/trunk:
Fixed broken links to java.sun.com. Issue reported via comments.apache.org

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1589676 13f79535-47bb-0310-9956-ffa450edef68