Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56082
Fix thread safety issue in JULI's LogManager implementation

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@1578799 13f79535-47bb-0310-9956-ffa450edef68
Make the xmlBlockExternal option in Catalina and Jasper to be true by default. Patch by kkolinko.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@1578804 13f79535-47bb-0310-9956-ffa450edef68
Proposal

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@1578815 13f79535-47bb-0310-9956-ffa450edef68