ref #1671 [fixed Consistency enum values]

- Inconsistent equals 0 restrain Comparator from correct mask checks
(i.e. checking inconsistency like that "mask & Inconsistent" will
always return false - that's why comparator failed to preserve strict
weak ordering)
'issues/1671-segmentation-fault' -> 'dev'
'dev' -> 'issues/1701-browser-api'
ref #1701 [trying out new fixes to the library interface]