Backport some EL refactoring in preparation for the fix for https://issues.apache.org/bugzilla/show_bug.cgi?id=56147

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1570516 13f79535-47bb-0310-9956-ffa450edef68
Backport some more EL refactoring in preparation for the fix for https://issues.apache.org/bugzilla/show_bug.cgi?id=56147

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1570519 13f79535-47bb-0310-9956-ffa450edef68
Backport some more EL refactoring in preparation for the fix for https://issues.apache.org/bugzilla/show_bug.cgi?id=56147
Includes some re-ordering of methods to simplify diff against 8.0.x

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1570529 13f79535-47bb-0310-9956-ffa450edef68
Back-port the first part of the 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/tc7.0.x/trunk@1570535 13f79535-47bb-0310-9956-ffa450edef68