Using Java 8 Predicate Function

+ Removing jetty-util (java 7) holdover Predicate.java
+ Converting use to (java 8) java.util.function.Predicate

jetty-http/src/main/java/org/eclipse/jetty/http/PathMap.java

@@ -26,11 +26,9 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.StringTokenizer;
-import java.util.function.BiFunction;
+import java.util.function.Predicate;
 
 import org.eclipse.jetty.util.ArrayTernaryTrie;
-import org.eclipse.jetty.util.IncludeExclude;
-import org.eclipse.jetty.util.Predicate;
 import org.eclipse.jetty.util.Trie;
 import org.eclipse.jetty.util.URIUtil;
 

jetty-http/src/main/java/org/eclipse/jetty/http/pathmap/PathSpecSet.java

@@ -24,8 +24,7 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
 import java.util.TreeSet;
-
+import java.util.function.Predicate;
-import org.eclipse.jetty.util.Predicate;
 
 /**
  * A Set of PathSpec strings.

jetty-util/src/main/java/org/eclipse/jetty/util/IncludeExclude.java

@@ -20,6 +20,7 @@ package org.eclipse.jetty.util;
 
 import java.util.HashSet;
 import java.util.Set;
+import java.util.function.Predicate;
 
 
 /** Utility class to maintain a set of inclusions and exclusions.

jetty-util/src/main/java/org/eclipse/jetty/util/Predicate.java

@@ -1,31 +0,0 @@
-//
-//  ========================================================================
-//  Copyright (c) 1995-2015 Mort Bay Consulting Pty. Ltd.
-//  ------------------------------------------------------------------------
-//  All rights reserved. This program and the accompanying materials
-//  are made available under the terms of the Eclipse Public License v1.0
-//  and Apache License v2.0 which accompanies this distribution.
-//
-//      The Eclipse Public License is available at
-//      http://www.eclipse.org/legal/epl-v10.html
-//
-//      The Apache License v2.0 is available at
-//      http://www.opensource.org/licenses/apache2.0.php
-//
-//  You may elect to redistribute this code under either of these licenses.
-//  ========================================================================
-//
-
-package org.eclipse.jetty.util;
-
-/**
- * Temporary implementation of Java 8's <code>java.util.function.Predicate</code>
- * <p>
- * To be removed for Java 8 only versions of Jetty.
- * 
- * @param <ITEM> the item to test
- */
-public interface Predicate<ITEM>
-{
-    boolean test(ITEM item);
-}

jetty-util/src/main/java/org/eclipse/jetty/util/RegexSet.java

@@ -23,6 +23,7 @@ import java.util.Collections;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Set;
+import java.util.function.Predicate;
 import java.util.regex.Pattern;
 
 /**