Todd Gamblin 3ab56a188e Fixes #980: really slow spack spec performance ...

- `spack spec dealii` now takse seconds rather than 18 minutes.

- Slow hash (`dag_hash`) was accidentally inserted into the fast hash
  (`__hash__`).

- Do not put the slow hash in the fast hash.

2016-05-22 18:33:13 -07:00

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spack

Fixes #980: really slow spack spec performance

2016-05-22 18:33:13 -07:00