Check for a few git variables before doing anything.
Merge pull request #4 from ktf/check-user-setup

Check for a few git variables before doing anything.
Allow git-cms-addpkg to work also outside a release area.
Add to repository and ignore test directory.
Add modification to the workflow discussed with Chris.

- Create a branch on the first usage of git-addpkg to make it clear the fork
  point.
- Use a symbolic ref to track the fork point.