Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56179
Supporting lambda expressions requires additional lookaheads to ensure the correct grammar is used.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1571242 13f79535-47bb-0310-9956-ffa450edef68
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56179
Re-generate parser
Add some test cases

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1571245 13f79535-47bb-0310-9956-ffa450edef68