Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=54095
Add support to the Default Servlet for serving gzipped versions of static resources directly from disk as an alternative to Tomcat compressing them on each request. Patch by Philippe Marschall.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1531115 13f79535-47bb-0310-9956-ffa450edef68
Fix TestVirtualContext after changes in r1530937

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1531120 13f79535-47bb-0310-9956-ffa450edef68