message: do not use self defined 'abs' function
diff: @@ -13,7 +13,7 @@ catkin_package(
  include_directories(include ${catkin_INCLUDE_DIRS})
  add_library(m5api src/Device/Device.cpp src/Device/ProtocolDevice.cpp src/Device/ESDDevice.cpp src/Device/PCanDevice.cpp src/Device/SocketCANDevice.cpp src/Device/ProtocolMessage.cpp src/Device/RS232Device.cpp src/Util/Random.cpp src/Util/Message.cpp src/Util/StopWatch.cpp src/Util/IOFunctions.cpp src/Util/Thread.cpp src/M5apiw32/m5apiw32.cpp)
  -set_target_properties(m5api PROPERTIES COMPILE_FLAGS "-D__LINUX__ -DUSE_PCAN -DUSE_ESD -DUSE_SOCKET_CAN")
  +set_target_properties(m5api PROPERTIES COMPILE_FLAGS "-D__LINUX__ -DUSE_PCAN -DUSE_ESD -DUSE_SOCKET_CAN -DNO_ABS_FCT")
  target_link_libraries(m5api ${catkin_LIBRARIES})
  ### INSTALL ###
  