Todd Gamblin 88cb11758b spec: refactor and clean up Spec initialization ... - Since early Spack versions, the SpecParser has (weirdly) been responsible for initializing Spec fields. - This refactors initialization to take place in Spec.__init__, as it probably should have originally. - This makes the code easier to read, the parser easier to understand, and removes the use of __new__ in the parser to initialize the Spec. - This also makes it possible to make a completely empty Spec with `Spec()` -- this is an abstract Spec that will match anything.		2018-12-06 15:48:23 -08:00
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spack	spec: refactor and clean up Spec initialization	2018-12-06 15:48:23 -08:00