fbase format specifier test: Name unit test more descriptive
Depends on:
  00b88e0962c190eaf0acd71a7d158f9e6f2b36d8
  ca16478eaf064accf7b65bd815873833998e5c2a
  6821520296b030f6ccee28b7e262dd7fa7beb86c
(Strictly speaking, only ca16478, but they're all tied together)