AP_HAL: rename Sempahore.h to Semaphores.h

this is needed to allow build on MacOS, as its case-insensitive
filesystem picks up the NuttX semaphore.h

libraries/AP_HAL/AP_HAL.h

@@ -19,7 +19,7 @@
 #include "RCInput.h"
 #include "RCOutput.h"
 #include "Scheduler.h"
-#include "Semaphore.h"
+#include "Semaphores.h"
 #include "Util.h"
 
 #include "utility/Print.h"

libraries/AP_HAL_AVR/SPIDevice_SPI0.cpp

@@ -6,7 +6,7 @@
 #include <AP_HAL.h>
 #include "SPIDevices.h"
 #include "GPIO.h"
-#include "Semaphore.h"
+#include "Semaphores.h"
 #include "pins_arduino_mega.h"
 using namespace AP_HAL_AVR;
 

libraries/AP_HAL_AVR/SPIDevice_SPI2.cpp

@@ -6,7 +6,7 @@
 #include <AP_HAL.h>
 #include "SPIDevices.h"
 #include "GPIO.h"
-#include "Semaphore.h"
+#include "Semaphores.h"
 #include "pins_arduino_mega.h"
 using namespace AP_HAL_AVR;
 

libraries/AP_HAL_AVR/SPIDriver.h

@@ -6,7 +6,7 @@
 #include "AP_HAL_AVR_Namespace.h"
 #include "GPIO.h"
 #include "SPIDevices.h"
-#include "Semaphore.h"
+#include "Semaphores.h"
 
 class AP_HAL_AVR::APM1SPIDeviceManager : public AP_HAL::SPIDeviceManager {
 public:

libraries/AP_HAL_AVR/Semaphore.cpp

@@ -2,7 +2,7 @@
 
 #include <AP_HAL.h>
 #include <AP_HAL_AVR.h>
-#include "Semaphore.h"
+#include "Semaphores.h"
 using namespace AP_HAL_AVR;
 
 extern const AP_HAL::HAL& hal;

libraries/AP_HAL_Empty/AP_HAL_Empty_Private.h

@@ -15,7 +15,7 @@
 #include "GPIO.h"
 #include "RCInput.h"
 #include "RCOutput.h"
-#include "Semaphore.h"
+#include "Semaphores.h"
 #include "Scheduler.h"
 #include "Util.h"
 #include "PrivateMember.h"

libraries/AP_HAL_Empty/SPIDriver.h

@@ -3,7 +3,7 @@
 #define __AP_HAL_EMPTY_SPIDRIVER_H__
 
 #include <AP_HAL_Empty.h>
-#include "Semaphore.h"
+#include "Semaphores.h"
 
 class Empty::EmptySPIDeviceDriver : public AP_HAL::SPIDeviceDriver {
 public:

libraries/AP_HAL_Empty/Semaphore.cpp

@@ -1,5 +1,5 @@
 
-#include "Semaphore.h"
+#include "Semaphores.h"
 
 using namespace Empty;