Todd Gamblin 0cc79e0564 Implement per-version attributes for flexible fetch policies. ...

- Tests pass with URL fetching and new scheme.
- Lots of refactoring
- Infrastructure is there for arbitrary fetch policies and more attribtues on the version() call.
- Mirrors do not currently work properly, and they get in the way of a proper git fetch

2014-10-03 16:55:13 -07:00

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spack

Implement per-version attributes for flexible fetch policies.

2014-10-03 16:55:13 -07:00