Merge branch 'next'

* next:
  minor, don't use flip-over values for the very first event
  minor, return least possible flip-over value
  minor, introduce flip-over years (syntax: Mn->Mm for n > m) and detection thereofs
  minor, use troq_last_inst() helper to determine if there was a year flip-over
  minor, refactor obtaining the last instant off a troq into troq_last_inst()
  fix, PEBKAC, don't use mremap() in init_gq()
  test, provide regressions for trod tool over schemas that span the years
  test, provide regressions for trod tool over simple schemas
  minor, take schemas and series from ${srcdir}
  chore, migrate .truftest files to new test environment
  tests, add clean rule for local tempdirs
  chore, migrate .truftest files to new test environment
  test suite, copy over improved test suite from atem
  minor, import truf-test tool to do the opt-parsing for the test script