R1:8240e0f72706

Treat "skipped" unit tests as less interesting than "passed"

Summary:
Ref T10457. Skipped tests are almost always well-behaved (e.g., `testWindows()`, but the test is running on Linux) and not interesting, and we do not expect well-written, solid systems to necessarily have 0 skips.

Although skips //could// indicate that you have missing dependencies on a build server, and thus be a bit interesting, I think they almost always indicate that a particular test is not expected to run in the current…