Provide Version fix when project is copied to foreign GIT repository

Implement fix for Version to not cause Exception when the project's
source code is copied to a foreign GIT repository.

The fix is to specify an optional project-name, passed to Version. If a
name is provided, the code obtaining version information from GIT first
tries to verify we are in the correct GIT repository. A simple heuristic
was implemented, which checks the output of 'git remote -v' for the name
of the project.
If .git is only a convention, that's a tough call; there's no easy answer then!  On balance  I guess I favor requiring .git, as you've now done. 

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