[MGPG-51]
 - Upgrade to Maven 2.2.1


git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1620723 13f79535-47bb-0310-9956-ffa450edef68
Remove duplicate MavenSession

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1620726 13f79535-47bb-0310-9956-ffa450edef68
[MPATCH-17]
 - compatiblity Maven 2.2.1


git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1620732 13f79535-47bb-0310-9956-ffa450edef68