message: cmake: don't overwrite debug build flags
  By mistake we overwrote the debug flags. This meant that the /MD /MDd
  flags got lost and needed to be added manually.
diff: @@ -35,8 +35,6 @@ else()
  -std=c++11
  -DWINDOWS
  )
  - set(CMAKE_CXX_FLAGS_RELEASE "/MD")
  - set(CMAKE_CXX_FLAGS_DEBUG "/MDd")
  set(warnings "-WX -W2")
  @@ -57,7 +55,7 @@ if(APPLE)
  endif()
  # Add DEBUG define for Debug target
  -set(CMAKE_CXX_FLAGS_DEBUG "-DDEBUG")
  +set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DDEBUG")
  # TODO: move into plugin
  if (ANDROID)
  