Partial fix for https://issues.apache.org/bugzilla/show_bug.cgi?id=55483
This fixes calling overloaded methods and aligns the method matching code in the API and the implementation. Unfortunately, this has required a fair amount of duplication. I don't see a way to avoid this, short of an el-util JAR that both depend on.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1518328 13f79535-47bb-0310-9956-ffa450edef68