[btcsuite/btcd] 829e87: Replace *KoblitzCurve by elliptic.Curve

[Daniel Martí]

  Branch: refs/heads/master
  Home:   https://github.com/btcsuite/btcd
  Commit: 829e87a733ddd013bdec130cdddb4663d8c454f1
      
https://github.com/btcsuite/btcd/commit/829e87a733ddd013bdec130cdddb4663d8c454f1
  Author: Daniel Martí <mv...@mvdan.cc>
  Date:   2016-01-03 (Sun, 03 Jan 2016)

  Changed paths:
    M btcec/privkey.go

  Log Message:
  -----------
  Replace *KoblitzCurve by elliptic.Curve

Found via github.com/mvdan/interfacer.