4434: Test whether sort order matches application locale, instead of testing a locale-dependent collation rule.
4434: Merge branch 'master' into 4434-collation
4434: Assume only that if a<b are lowercase ascii, aX<bY for any X, Y, collation.
4434: use select! instead of &= to preserve duplicates.
Merge branch '4434-collation' closes #4434