Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=55198
Correctly escape XML output from tagx files

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@1556526 13f79535-47bb-0310-9956-ffa450edef68
Fix issue with Manager app and other apps that use i18n in the UI when a request that specifies an Accept-Language of English ahead of French, Spanish or Japanese.
Port all the other improvements to the StringManager from trunk as well

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@1556539 13f79535-47bb-0310-9956-ffa450edef68
Add support for limiting the size of chunk extensions when using chunked encoding.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@1556540 13f79535-47bb-0310-9956-ffa450edef68