Renamed folders for consistency, using sim/athena/shared schema (#27)

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.

wpilibc/sim/src/Talon.cpp

@@ -0,0 +1,65 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2008-2016. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "Talon.h"
+
+//#include "NetworkCommunication/UsageReporting.h"
+#include "LiveWindow/LiveWindow.h"
+
+/**
+ * @param channel The PWM channel that the Talon is attached to.
+ */
+Talon::Talon(uint32_t channel) : SafePWM(channel) {
+  /* Note that the Talon uses the following bounds for PWM values. These values
+   * should work reasonably well for most controllers, but if users experience
+   * issues such as asymmetric behavior around the deadband or inability to
+   * saturate the controller in either direction, calibration is recommended.
+   * The calibration procedure can be found in the Talon User Manual available
+   * from CTRE.
+   *
+   *   - 211 = full "forward"
+   *   - 133 = the "high end" of the deadband range
+   *   - 129 = center of the deadband range (off)
+   *   - 125 = the "low end" of the deadband range
+   *   - 49 = full "reverse"
+   */
+  SetBounds(2.037, 1.539, 1.513, 1.487, .989);
+  SetPeriodMultiplier(kPeriodMultiplier_2X);
+  SetRaw(m_centerPwm);
+
+  LiveWindow::GetInstance()->AddActuator("Talon", GetChannel(), this);
+}
+
+/**
+ * Set the PWM value.
+ *
+ * The PWM value is set using a range of -1.0 to 1.0, appropriately
+ * scaling the value for the FPGA.
+ *
+ * @param speed     The speed value between -1.0 and 1.0 to set.
+ * @param syncGroup Unused interface.
+ */
+void Talon::Set(float speed, uint8_t syncGroup) { SetSpeed(speed); }
+
+/**
+ * Get the recently set value of the PWM.
+ *
+ * @return The most recently set value for the PWM between -1.0 and 1.0.
+ */
+float Talon::Get() const { return GetSpeed(); }
+
+/**
+ * Common interface for disabling a motor.
+ */
+void Talon::Disable() { SetRaw(kPwmDisabled); }
+
+/**
+ * Write out the PID value as seen in the PIDOutput base object.
+ *
+ * @param output Write out the PWM value as was found in the PIDController
+ */
+void Talon::PIDWrite(float output) { Set(output); }