Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=57309
Ensure that the current EL Resolver is given an opportunity to perform type coercion before applying the default EL coercion rules.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc8.0.x/trunk@1643367 13f79535-47bb-0310-9956-ffa450edef68
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=57284
Enable startAsync() to be called from a Filter and still be able to call the remainder of the FilterChain

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc8.0.x/trunk@1643383 13f79535-47bb-0310-9956-ffa450edef68