merged from frcsim branch

verified to work on real robots
adds sim eclipse plugins, fixed JavaGazebo, made wpilibC++Sim build on windows
 - Java and C++ simulation robot programs run on windows
 - simulation eclipse plugin delivers models and gazebo plugins
 - Java Gazebo now respects GAZEBO_IP variables and can work across networks
 - hal and network tables win32 hacked to work on windows
 - smart dashboard broken on windows due to network tables hacks
 - wpilibC++Sim, gz_msgs, and frcsim_gazebo_plugins build with CMake
 - removed constexpr for cross platform compatibility
 - msgs generated using .protos as a part of build process
 - some spare and unused cmake/pom files deleted
 - simulation ubuntu debians removed entirely
 - refactored CMake project flags and macros
 - updated to match non-sim C++ API
 - fixed and updated documentation
 - servo added to simulation

Change-Id: Ia702ff0f1fee10d77f543810ad88f56696443b05

networktables/cpp/include/networktables2/thread/DefaultThreadManager.h

@@ -17,11 +17,7 @@ class PeriodicNTThread;
 #include "networktables2/thread/NTThreadManager.h"
 #include "networktables2/thread/NTThread.h"
 
-#if defined WIN32
-#include "OSAL/Task.h"
-#else
 #include <pthread.h>
-#endif
 
 class DefaultThreadManager : public NTThreadManager{
 public:
@@ -30,21 +26,11 @@ public:
 
 class PeriodicNTThread : public NTThread {
 private:
-#if defined WIN32
-	const char* name;
-	NTTask* thread;
-#else
 	pthread_t thread;
-#endif
 	PeriodicRunnable* r;
 	bool run;
-#if defined WIN32
-	int _taskMain();
-	static int taskMain(PeriodicNTThread* o);
-#else//TODO make return int for pthread as well
 	void _taskMain();
 	static void* taskMain(PeriodicNTThread* o);
-#endif
 public:
 	PeriodicNTThread(PeriodicRunnable* r, const char* name);
 	virtual ~PeriodicNTThread();