Add a new limit, defaulting to 2MB, for the amount of data Tomcat will swallow for an aborted upload.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1603770 13f79535-47bb-0310-9956-ffa450edef68
Correct test. Exceeded the swallow limit aborts the connection.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1603775 13f79535-47bb-0310-9956-ffa450edef68