Update npn and alpn dependencies

Motivation:
New versions of alpn-boot and npn-boot have been released.

Modifications:
- Update pom to pull in new versions.

Result:
Dependencies more up to date.

pom.xml

@@ -465,7 +465,7 @@
         </property>
       </activation>
       <properties>
-        <jetty.npn.version>1.1.10.v20150130</jetty.npn.version>
+        <jetty.npn.version>1.1.11.v20150415</jetty.npn.version>
         <jetty.alpn.version>7.1.3.v20150130</jetty.alpn.version>
       </properties>
     </profile>
@@ -553,6 +553,18 @@
         <jetty.alpn.version>8.1.3.v20150130</jetty.alpn.version>
       </properties>
     </profile>
+    <profile>
+      <id>alpn-8u51</id>
+      <activation>
+        <property>
+          <name>java.version</name>
+          <value>1.8.0_51</value>
+        </property>
+      </activation>
+      <properties>
+        <jetty.alpn.version>8.1.4.v20150727</jetty.alpn.version>
+      </properties>
+    </profile>
     <profile>
       <!--
       This profile exists because either ALPN or NPN can exits on the class path at once, but not both.
@@ -576,9 +588,9 @@
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <jboss.marshalling.version>1.3.18.GA</jboss.marshalling.version>
-    <jetty.npn.version.latest>1.1.10.v20150130</jetty.npn.version.latest>
+    <jetty.npn.version.latest>1.1.11.v20150415</jetty.npn.version.latest>
     <jetty.alpn.version.latest7>7.1.3.v20150130</jetty.alpn.version.latest7>
-    <jetty.alpn.version.latest8>8.1.3.v20150130</jetty.alpn.version.latest8>
+    <jetty.alpn.version.latest8>8.1.4.v20150727</jetty.alpn.version.latest8>
     <jetty.npn.version>${jetty.npn.version.latest}</jetty.npn.version>
     <jetty.npn.path>${settings.localRepository}/org/mortbay/jetty/npn/npn-boot/${jetty.npn.version}/npn-boot-${jetty.npn.version}.jar</jetty.npn.path>
     <jetty.alpn.version>${jetty.alpn.version.latest7}</jetty.alpn.version>