[conformal/btcd] b661dd: Convert block manager block handler to pure FIFO.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcd
  Commit: b661dd3693dab0d9ce5a0804b9458a0b82215e34
      
https://github.com/conformal/btcd/commit/b661dd3693dab0d9ce5a0804b9458a0b82215e34
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-03-12 (Wed, 12 Mar 2014)

  Changed paths:
    M blockmanager.go

  Log Message:
  -----------
  Convert block manager block handler to pure FIFO.

Rather than having a separate query channel for the block manager, use the
same channel so the block handler acts as a pure FIFO queue.  This
prevents possible starvation of query related messages.

ok @owainga