made tests work with matthias314/julia#m3/ranges-equal

The test `reshape(Fill(2,6), big(2), :) == Fill(2, 2, 3)` is broken
on Julia master because the left-hand side errors. This has nothing to do
with matthias314/julia#m3/ranges-equal. I've marked it as `@test_broken`
so that it doesn't block the other tests.

Author: matthias314