[moses-smt/mosesdecoder] c4416c: Disable incremental search for Boost < 1.42

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

  Branch: refs/heads/master
  Home:   https://github.com/moses-smt/mosesdecoder
  Commit: c4416c85faac3383f030471543f17c5eb2d3b895
      https://github.com/moses-smt/mosesdecoder/commit/c4416c85faac3383f030471543f17c5eb2d3b895
  Author: Kenneth Heafield <gi...@kh...>
  Date:   2012-10-22 (Mon, 22 Oct 2012)

  Changed paths:
    M search/vertex_generator.cc

  Log Message:
  -----------
  Disable incremental search for Boost < 1.42