Branch: refs/heads/master
  Home:   https://github.com/btcsuite/btcd
  Commit: c57c18c8e2e9c43b5cc81b04e5f84b23ccf95661
      
https://github.com/btcsuite/btcd/commit/c57c18c8e2e9c43b5cc81b04e5f84b23ccf95661
  Author: Dave Collins <da...@conformal.com>
  Date:   2016-08-23 (Tue, 23 Aug 2016)

  Changed paths:
    M blockchain/chain.go
    M blockchain/chainio.go

  Log Message:
  -----------
  blockchain: Add median time to state snapshot.

This adds a new field to the best chain state snapshot for the
calculated past median time as returned by the calcPastMedianTime
function.  This is useful since it provides fast access to it without
having to acquire the chain lock which is needed to recalculate it.

This will ultimately allow the associated exported function to be
removed since it only exists to be able to calculate this exact value,
however this commit only introduces the new field in order to keep the
changes minimal.


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