Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=55939
Ensure that flags used for non-blocking writes are reset between requests.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1554298 13f79535-47bb-0310-9956-ffa450edef68
Happy new 2014.


git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1555163 13f79535-47bb-0310-9956-ffa450edef68