Alex Morcos c6c2f0fd78 Implement SequenceLocks functions
SequenceLocks functions are used to evaluate sequence lock times or heights per BIP 68.

The majority of this code is copied from maaku in #6312
Further credit: btcdrak, sipa, NicolasDorier
2016-02-10 15:35:33 -05:00
..
2016-02-10 15:35:33 -05:00