Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56611
Refactor code to remove inefficient calls to Method.isAnnotationPresent(). Based on a patch by Jian Mou.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1603592 13f79535-47bb-0310-9956-ffa450edef68