[maven-release-plugin] prepare release jcommander-1.6
[maven-release-plugin] prepare release jcommander-1.6

cbeust/jcommander,selliera/jcommander,selliera/jcommander,cbeust/jcommander,VikingDen/jcommander,madrob/jcommander,selliera/jcommander,TKlerx/jcommander,cbeust/jcommander,winndows/jcommander,madrob/jcommander