[MJAR-243] - maven-archiver 3.1.1 to 3.2.0
 o Based on the update we have to life JDK version to 7
 o Needed also to update plexus-archiver and plexus-utils
   to keep them in sync based on the transitive dependencies.
 o Bumped version to 3.1.0
diff --git a/pom.xml b/pom.xml
index c78fabe..772bfdc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,25 +1,28 @@
 <?xml version='1.0' encoding='UTF-8'?>
 
 <!--
-Licensed to the Apache Software Foundation (ASF) under one
-or more contributor license agreements.  See the NOTICE file
-distributed with this work for additional information
-regarding copyright ownership.  The ASF licenses this file
-to you under the Apache License, Version 2.0 (the
-"License"); you may not use this file except in compliance
-with the License.  You may obtain a copy of the License at
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements. See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership. The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License. You may obtain a copy of the License at
 
   http://www.apache.org/licenses/LICENSE-2.0
 
-Unless required by applicable law or agreed to in writing,
-software distributed under the License is distributed on an
-"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-KIND, either express or implied.  See the License for the
-specific language governing permissions and limitations
-under the License.
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied. See the License for the
+  specific language governing permissions and limitations
+  under the License.
 -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project
+  xmlns="http://maven.apache.org/POM/4.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <parent>
@@ -30,7 +33,7 @@
   </parent>
 
   <artifactId>maven-jar-plugin</artifactId>
-  <version>3.0.3-SNAPSHOT</version>
+  <version>3.1.0-SNAPSHOT</version>
   <packaging>maven-plugin</packaging>
 
   <name>Apache Maven JAR Plugin</name>
@@ -75,8 +78,10 @@
   </distributionManagement>
 
   <properties>
-    <mavenArchiverVersion>3.1.1</mavenArchiverVersion>
+    <mavenArchiverVersion>3.2.0</mavenArchiverVersion>
     <mavenVersion>3.0</mavenVersion>
+    <maven.compiler.target>1.7</maven.compiler.target>
+    <maven.compiler.source>1.7</maven.compiler.source>
   </properties>
 
   <dependencies>
@@ -106,15 +111,20 @@
       <artifactId>maven-plugin-annotations</artifactId>
       <scope>provided</scope>
     </dependency>
+    <!--
+      ! other dependencies contain references to older versions
+      ! so we define it here explicit to make sure we get the
+      ! correct version for plexus-archiver and plexus-utils.
+    -->
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-archiver</artifactId>
-      <version>3.4</version>
+      <version>3.5</version>
     </dependency>
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-utils</artifactId>
-      <version>3.0.24</version>
+      <version>3.1.0</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>