[maven-release-plugin] prepare release jenkins-1.581
[maven-release-plugin] prepare for next development iteration
updated changelog for release
Update package name reference.

Update package name reference from Hudson to Jenkins.
updated changelog as a part of the release
merged back the RC branch
creating an RC branch
the trunk is toward 1.583-SNAPSHOT
Merge pull request #1403 from amaurymedeiros/patch-1

Update package name reference.