The two messages are only warnings, but it looks like some cleanup is
needed here.
- the esky / bbfreeze message is in case you want a frozen build with
automatic updates
http://docs.saltstack.org/en/latest/topics/tutorials/esky.html
- the proper version / git tags message is to let you know about the
extra step needed for salt to report the correct version; run 'git fetch
--tags upstream' to fix this.
Do you still get a working salt in bin/ in your virtualenv?
_S