recognise CIL_VERSION from git tag

[TomasKulhanek]

recognise CIL_VERSION from git tag e.g.

• [x] git describe --tags gets tag with number of commits after it, tagged are labeled as release in anaconda, comits after are labeled as dev version
• [x] git rev-parse --abbrev-ref HEAD gets branch where it is, master will be uploaded to anaconda
• [x] jenkins, branch specifier, * to build all, /master to build master, ${sha1} to build pull request ?? See comments at https://stackoverflow.com/questions/1593188/how-to-programmatically-determine-whether-the-git-checkout-is-a-tag-and-if-so-w