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

eclipse-plugins/edu.wpi.first.wpilib.plugins.simulation/META-INF/MANIFEST.MF

@@ -0,0 +1,13 @@
+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name: WPILib_Robot_Simulation
+Bundle-SymbolicName: edu.wpi.first.wpilib.plugins.simulation;singleton:=true
+Bundle-Version: 0.1.0.qualifier
+Bundle-Activator: edu.wpi.first.wpilib.plugins.simulation.WPILibSimulationPlugin
+Require-Bundle: org.eclipse.core.runtime,
+ edu.wpi.first.wpilib.plugins.core;bundle-version="0.1.0",
+ org.eclipse.jface;bundle-version="3.10.2",
+ org.eclipse.ui;bundle-version="3.106.1"
+Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-ActivationPolicy: lazy
+Bundle-Vendor: Worcester Polytechnic Institute