is the mailmap test functional in CI?

@karl-wette @duncanmmacleod is there some way to verify if the .mailmap test introduced in !1209 (merged) is actually functional in the CI? Running "make check" within lalsimulation on my local checkout fails at the .mailmap test for rcotesta who had used a unregistered e-mail address on these two earlier commits 5351dcec 89371618 on master. Shouldn't this have caused a failure somewhere before?

(I noticed that while fixing up the .mailmap for this branch, but traced Roberto's commits back to master.)

In a related question, it seems that a stand-alone "make check-AUTHORS" can only be done inside package directories, not on the top-level. Is that intentional?