ctests: uninvert 3 tests that pass due to updates

ctests: uninvert 3 tests that pass due to updates

When updating to the latest TeX Live revision, these exports now
succeed.

Inspecting the differences between the "good" PDF and the "bad" PDF
(where the test failed) there are three differences, which can be
found on the printed page numbers 81 and 82 (PDF page numbers 91 and
92). The accented i in "lím" was printed incorrectly (and the
missing glyph was correctly detected). After the update the
character is printed correctly and there is no longer an error.

The package that caused the change is likely babel or babel-spanish.
You can see the log from the TeX Live update that caused the fix by
seeing the attachment to the message here:

https://www.mail-archive.com/search?l=mid&q=20160313015902.lny3g5aujh4c4aps%40scott-Za1510