[MCHANGELOG-114] add standard skip configuration option

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1242170 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/maven/plugin/changelog/ChangeLogReport.java b/src/main/java/org/apache/maven/plugin/changelog/ChangeLogReport.java
index 2660c24..e1ea936 100644
--- a/src/main/java/org/apache/maven/plugin/changelog/ChangeLogReport.java
+++ b/src/main/java/org/apache/maven/plugin/changelog/ChangeLogReport.java
@@ -237,6 +237,15 @@
     protected String scmUrl;
 
     /**
+     * Skip the Changelog report generation.  Most useful on the command line
+     * via "-Dchangelog.skip=true".
+     *
+     * @parameter expression="${changelog.skip}" default-value="false"
+     * @since 2.3
+     */
+    protected boolean skip;
+
+    /**
      * The Maven Project Object
      *
      * @parameter expression="${project}"
@@ -1746,6 +1755,11 @@
             return false;
         }
 
+        if ( skip )
+        {
+            return false;
+        }
+
         return true;
     }
 }