Cleaned up RobotBase, removed singleton list from SensorBase, and removed unused typedefs and NULL_TASK macro from HAL's Task.hpp. Making the robot class instance static fixed non-POD statics used by the instance during destruction from being destroyed first.
HAL Port is using a special handle, where the module and pin are bit
shifted straight into the handle. This is one of the few special cases
we have, but for the way port is used it is much cleaner and uses much
less memory. Plus it is generic and not specific to one type.
The network communication headers were moved to the include directory of the HAL and their copies were removed from wpilibc. Also, symModuleLink.h was removed because the function which it prototypes hasn't been used in WPILib since the roboRIO switch.
Rename the following folders:
hal/lib/Athena -> hal/lib/athena
hal/lib/Desktop -> hal/lib/sim
hal/lib/Shared -> hal/lib/shared
wpilibc/Athena -> wpilibc/athena
wpilibc/simulation -> wpilibc/sim
Windows users may need to run gradlew clean after updating.
