Use 1.5.1 instead of 1.6

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@115717 13f79535-47bb-0310-9956-ffa450edef68

plugin/project.xml

@@ -23,7 +23,7 @@
   <pomVersion>3</pomVersion>
   <id>maven-plugin-plugin</id>
   <name>Maven Plugin Plugin</name>
-  <currentVersion>1.6-SNAPSHOT</currentVersion>
+  <currentVersion>1.5.1-SNAPSHOT</currentVersion>
   <description>Maven Plugin management plugin. Requires Maven 1.0 RC4.</description>
   <shortDescription>Maven Plugin plugin</shortDescription>
   <url>http://maven.apache.org/reference/plugins/plugin/</url>