[moses-smt/mosesdecoder] 8fdec9: Use boost::unordered_map instead of std::map.

[GitHub <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/moses-smt/mosesdecoder
  Commit: 8fdec9bf3059e388b267da06b4d5a0ca67615df7
      https://github.com/moses-smt/mosesdecoder/commit/8fdec9bf3059e388b267da06b4d5a0ca67615df7
  Author: Tetsuo Kiso <tet...@is...>
  Date:   2012-12-06 (Thu, 06 Dec 2012)

  Changed paths:
    M mert/BleuScorer.cpp
    M mert/BleuScorer.h
    M mert/Scorer.cpp
    M mert/Scorer.h
    M mert/Vocabulary.cpp
    M mert/Vocabulary.h

  Log Message:
  -----------
  Use boost::unordered_map instead of std::map.

For storing the word vocabulary used in computation of
BLEU scores. This change will reduce the running time
of extractor about 2-3 seconds (9% reduction).