Use Apple's nomenclature for macOS and iOS

Fixes https://github.com/libsdl-org/SDL/issues/6621

src/joystick/hidapi/SDL_hidapi_luna.c

@@ -36,7 +36,7 @@
 /*#define DEBUG_LUNA_PROTOCOL*/
 
 /* Sending rumble on macOS blocks for a long time and eventually fails */
-#if !defined(__MACOSX__)
+#if !defined(__MACOS__)
 #define ENABLE_LUNA_BLUETOOTH_RUMBLE
 #endif
 

src/joystick/hidapi/SDL_hidapi_ps3.c

@@ -78,7 +78,7 @@ HIDAPI_DriverPS3_IsEnabled(void)
 {
     SDL_bool default_value;
 
-#if defined(__MACOSX__)
+#if defined(__MACOS__)
     /* This works well on macOS */
     default_value = SDL_TRUE;
 #elif defined(__WINDOWS__)

src/joystick/hidapi/SDL_hidapi_steam.c

@@ -366,7 +366,7 @@ static int GetFeatureReport( SDL_hid_device *dev, unsigned char uBuffer[65] )
         // On Windows and macOS, BLE devices get 2 copies of the feature report ID, one that is removed by ReadFeatureReport,
         // and one that's included in the buffer we receive. We pad the bytes to read and skip over the report ID
         // if necessary.
-#if defined(__WIN32__) || defined(__MACOSX__)
+#if defined(__WIN32__) || defined(__MACOS__)
         ++ucBytesToRead;
         ++ucDataStartOffset;
 #endif

src/joystick/hidapi/SDL_hidapi_xbox360.c

@@ -87,13 +87,13 @@ HIDAPI_DriverXbox360_IsSupportedDevice(SDL_HIDAPI_Device *device, const char *na
         /* This is the chatpad or other input interface, not the Xbox 360 interface */
         return SDL_FALSE;
     }
-#if defined(__MACOSX__) || defined(__WIN32__)
+#if defined(__MACOS__) || defined(__WIN32__)
     if (vendor_id == USB_VENDOR_MICROSOFT && product_id == 0x028e && version == 1) {
         /* This is the Steam Virtual Gamepad, which isn't supported by this driver */
         return SDL_FALSE;
     }
 #endif
-#if defined(__MACOSX__)
+#if defined(__MACOS__)
     /* Wired Xbox One controllers are handled by this driver, interfacing with
        the 360Controller driver available from:
        https://github.com/360Controller/360Controller/releases
@@ -209,7 +209,7 @@ HIDAPI_DriverXbox360_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joyst
 static int
 HIDAPI_DriverXbox360_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
 {
-#ifdef __MACOSX__
+#ifdef __MACOS__
     if (SDL_IsJoystickBluetoothXboxOne(device->vendor_id, device->product_id)) {
         Uint8 rumble_packet[] = { 0x03, 0x0F, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00 };
 
@@ -220,7 +220,7 @@ HIDAPI_DriverXbox360_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joy
             return SDL_SetError("Couldn't send rumble packet");
         }
     } else {
-        /* On Mac OS X the 360Controller driver uses this short report,
+        /* On macOS the 360Controller driver uses this short report,
            and we need to prefix it with a magic token so hidapi passes it through untouched
          */
         Uint8 rumble_packet[] = { 'M', 'A', 'G', 'I', 'C', '0', 0x00, 0x04, 0x00, 0x00 };
@@ -280,7 +280,7 @@ static void
 HIDAPI_DriverXbox360_HandleStatePacket(SDL_Joystick *joystick, SDL_DriverXbox360_Context *ctx, Uint8 *data, int size)
 {
     Sint16 axis;
-#ifdef __MACOSX__
+#ifdef __MACOS__
     const SDL_bool invert_y_axes = SDL_FALSE;
 #else
     const SDL_bool invert_y_axes = SDL_TRUE;

src/joystick/hidapi/SDL_hidapi_xboxone.c

@@ -365,7 +365,7 @@ HIDAPI_DriverXboxOne_IsEnabled(void)
 static SDL_bool
 HIDAPI_DriverXboxOne_IsSupportedDevice(SDL_HIDAPI_Device *device, const char *name, SDL_GameControllerType type, Uint16 vendor_id, Uint16 product_id, Uint16 version, int interface_number, int interface_class, int interface_subclass, int interface_protocol)
 {
-#ifdef __MACOSX__
+#ifdef __MACOS__
     /* Wired Xbox One controllers are handled by the 360Controller driver */
     if (!SDL_IsJoystickBluetoothXboxOne(vendor_id, product_id)) {
         return SDL_FALSE;

src/joystick/hidapi/SDL_hidapijoystick_c.h

@@ -67,8 +67,8 @@ typedef struct _SDL_HIDAPI_Device
     int interface_class;
     int interface_subclass;
     int interface_protocol;
-    Uint16 usage_page;      /* Available on Windows and Mac OS X */
-    Uint16 usage;           /* Available on Windows and Mac OS X */
+    Uint16 usage_page;      /* Available on Windows and macOS */
+    Uint16 usage;           /* Available on Windows and macOS */
     SDL_bool is_bluetooth;
     SDL_JoystickType joystick_type;
     SDL_GameControllerType type;