Update the spec to reflect the var -> ref change
Rename the spec test variable-functions.chpl -> ref-return-intent.chpl
Updates from Vass's feedback
Merge pull request #498 from Kyle-B/kb-var-ref-spec-update

Update the spec to reflect the var -> ref change

What it says on the tin. I believe I've reworded all the references to var functions that are in the spec.