[MRELEASE-819] preparationGoals parameter supported before version 2.4 

git-svn-id: https://svn.apache.org/repos/asf/maven/release/trunk@1432640 13f79535-47bb-0310-9956-ffa450edef68
[MRELEASE-820] Upgrade Plexus Utils dependency

git-svn-id: https://svn.apache.org/repos/asf/maven/release/trunk@1433030 13f79535-47bb-0310-9956-ffa450edef68
[MRELEASE-830] Fall back to SCM-1.7 until git status --porcelain issues are resolved 

git-svn-id: https://svn.apache.org/repos/asf/maven/release/trunk@1459921 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare release maven-release-2.4.1

git-svn-id: https://svn.apache.org/repos/asf/maven/release/trunk@1459923 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/maven/release/trunk@1459926 13f79535-47bb-0310-9956-ffa450edef68