message: Removed OpenCV and boost::filesystem dependency from utils
  scm-to-cereal is the only util and it now only requires boost::program_options.
diff: -# The utils need a few additional dependencies (e.g. boost::split, boost filesystem, program_options, and OpenCV highgui):
  -
  -# Check installed version in order to include the correct OpenCV libraries:
  -# First call find_package without a version to find any OpenCV. OpenCV_VERSION_MAJOR is then defined.
  -find_package(OpenCV REQUIRED core)
  -if("${OpenCV_VERSION_MAJOR}$" EQUAL 2)
  - message(STATUS "OpenCV 2.x detected")
  - find_package(OpenCV 2.4.3 REQUIRED core imgproc highgui)
  -elseif("${OpenCV_VERSION_MAJOR}$" EQUAL 3)
  - message(STATUS "OpenCV 3.x detected - including imgcodecs for compatibility")
  - find_package(OpenCV 3 REQUIRED core imgproc imgcodecs)
  -endif()
  -# This allows us to compile in RelWithDebInfo. It'll use the Release-version of OpenCV:
  -set_target_properties(${OpenCV_LIBS} PROPERTIES MAP_IMPORTED_CONFIG_RELWITHDEBINFO RELEASE)
  -
  +# scm-to-cereal needs boost::program_options:
  if(MSVC)
  # The standard find_package for boost on Win finds the dynamic libs, so for dynamic linking to boost we need to #define:
  add_definitions(-DBOOST_ALL_NO_LIB) # Don't use the automatic library linking by boost with VS (#pragma ...). Instead, we specify everything here in cmake.
  add_definitions(-DBOOST_ALL_DYN_LINK) # Link against the dynamic boost lib - needs to match with the version that find_package finds.
  add_definitions(-D_HAS_AUTO_PTR_ETC) # Boost 1.65.1 still does not work with VS C++17 mode, this is the workaround
  endif()
  -find_package(Boost 1.50.0 COMPONENTS system filesystem program_options REQUIRED)
  +find_package(Boost 1.50.0 COMPONENTS system program_options REQUIRED)
  message(STATUS "Boost found at ${Boost_INCLUDE_DIRS}")
  # Converts a CVSSP .scm Morphable Model to a cereal binary file:
  add_executable(scm-to-cereal scm-to-cereal.cpp)
  -target_link_libraries(scm-to-cereal eos ${OpenCV_LIBS} ${Boost_LIBRARIES})
  -target_include_directories(scm-to-cereal PUBLIC ${OpenCV_INCLUDE_DIRS} ${Boost_INCLUDE_DIRS})
  +target_link_libraries(scm-to-cereal eos ${Boost_LIBRARIES})
  +target_include_directories(scm-to-cereal PUBLIC ${Boost_INCLUDE_DIRS})
  # Install targets:
  install(TARGETS scm-to-cereal DESTINATION bin)
  