Add maven.changelog.basedir property for users that don't use basedir directory for checkout.

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@114669 13f79535-47bb-0310-9956-ffa450edef68

developer-activity/project.xml

@@ -5,7 +5,7 @@
   <pomVersion>3</pomVersion>
   <id>maven-developer-activity-plugin</id>
   <name>Maven Developer Activity Plug-in</name>
-  <currentVersion>1.3</currentVersion>
+  <currentVersion>1.4-SNAPSHOT</currentVersion>
   <description>This document provides a report of activity in terms of CVS commits and breaks it out by developer.</description>
   <shortDescription>Developer Activity report</shortDescription>
   <url>http://maven.apache.org/reference/plugins/developer-activity/</url>