This commit kills Xcode!

TransBeliefHarness fails to compile when used with
Xcode Version 4.6.1 (4H512) OSX 10.8 x86_64
boost: stable 1.53.0
eigen: stable 3.1.2
maxsum-cpp: https://github.com/lteacy/maxsum-cpp/tree/clang_decBRL_killer_version