cpack version not correctly set

[BeatScherrer]

Steps to reproduce: when generating a package with cpack the version of the generated package is not entirely correct: The name shows the correct version number while when installing the reported version is 0.1.1 which indicates the version is not set at all.

I'm opening a pull request with the corresponding fix. If you want to configure it another way (which certainly is possible) just propose the solution.