Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=55743
Enable the stop script to work when the shutdown port is disabled and a PID file is defined.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1557747 13f79535-47bb-0310-9956-ffa450edef68
https://issues.apache.org/bugzilla/show_bug.cgi?id=55986
Ensure that if Tomcat is stopped via "kill -9 <PID>" that the script doesn't falsely report that it is still running.
Based on a patch by jess.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1557752 13f79535-47bb-0310-9956-ffa450edef68