Simplify

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1469987 13f79535-47bb-0310-9956-ffa450edef68
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=54807
Forgot to create TreeSet with correct Comparator. Add a test case that checks the context starts correctly.

Also, TemplatePathMatchComparator is thread-safe so use a single instance rather than creating multiple instances.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1469997 13f79535-47bb-0310-9956-ffa450edef68