message: Move boost flags for MSVC compilation issue (already moved on rev. 2115)
diff: cmake_minimum_required(VERSION 2.6)
  project(Persistent_cohomology_examples)
  -# problem with Visual Studio link on Boost program_options
  -add_definitions( -DBOOST_ALL_NO_LIB )
  -add_definitions( -DBOOST_ALL_DYN_LINK )
  -
  add_executable(plain_homology plain_homology.cpp)
  target_link_libraries(plain_homology ${Boost_SYSTEM_LIBRARY})
  