add tar.gz generation through CPack
add tar.gz generation through CPack

Thanks Cameron for finding this

YetAnotherMinion/core,YetAnotherMinion/core,yangf4/core,YetAnotherMinion/core,yangf4/core,yangf4/core,YetAnotherMinion/core,yangf4/core,YetAnotherMinion/core,yangf4/core