Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56383
Merged r1590422 from tomcat/trunk:
Review of r1589994:
- Reduce visibility of fields that have getter methods
- Do not print <h3></h3> line if showServerInfo is turned off

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1590423 13f79535-47bb-0310-9956-ffa450edef68