[maven-release-plugin] prepare release flatten-maven-plugin-1.0.0-beta-3
[maven-release-plugin] prepare release flatten-maven-plugin-1.0.0-beta-3

git-svn-id: 32ada3a466e983fa803107f1dcf3512bd003faba@20007 52ab4f32-60fc-0310-b215-8acea882cd1b

mohanaraosv/flatten-maven-plugin,cemo/flatten-maven-plugin,mojohaus/flatten-maven-plugin