Update SDL2 to newest version to fix 7.1 playback

This fixes 7.1 playback. Before this commit, SDL used 7.1 front audio configuration with Center Left and Center Right speakers, but without Rear speakers.

See https://github.com/libsdl-org/SDL/issues/11709 for more details.

libs/SDL2/include/SDL_test_fuzzer.h

@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -19,7 +19,7 @@
   3. This notice may not be removed or altered from any source distribution.
 */
 
-/**
+/*
  *  \file SDL_test_fuzzer.h
  *
  *  Include file for SDL test framework.
@@ -48,13 +48,13 @@ extern "C" {
 */
 
 
-/**
+/*
  * \file
  * Note: The fuzzer implementation uses a static instance of random context
  * internally which makes it thread-UNsafe.
  */
 
-/**
+/*
  * Initializes the fuzzer for a test
  *
  * \param execKey Execution "Key" that initializes the random number generator uniquely for the test.
@@ -63,14 +63,14 @@ extern "C" {
 void SDLTest_FuzzerInit(Uint64 execKey);
 
 
-/**
+/*
  * Returns a random Uint8
  *
  * \returns a generated integer
  */
 Uint8 SDLTest_RandomUint8(void);
 
-/**
+/*
  * Returns a random Sint8
  *
  * \returns a generated signed integer
@@ -78,14 +78,14 @@ Uint8 SDLTest_RandomUint8(void);
 Sint8 SDLTest_RandomSint8(void);
 
 
-/**
+/*
  * Returns a random Uint16
  *
  * \returns a generated integer
  */
 Uint16 SDLTest_RandomUint16(void);
 
-/**
+/*
  * Returns a random Sint16
  *
  * \returns a generated signed integer
@@ -93,7 +93,7 @@ Uint16 SDLTest_RandomUint16(void);
 Sint16 SDLTest_RandomSint16(void);
 
 
-/**
+/*
  * Returns a random integer
  *
  * \returns a generated integer
@@ -101,14 +101,14 @@ Sint16 SDLTest_RandomSint16(void);
 Sint32 SDLTest_RandomSint32(void);
 
 
-/**
+/*
  * Returns a random positive integer
  *
  * \returns a generated integer
  */
 Uint32 SDLTest_RandomUint32(void);
 
-/**
+/*
  * Returns random Uint64.
  *
  * \returns a generated integer
@@ -116,36 +116,36 @@ Uint32 SDLTest_RandomUint32(void);
 Uint64 SDLTest_RandomUint64(void);
 
 
-/**
+/*
  * Returns random Sint64.
  *
  * \returns a generated signed integer
  */
 Sint64 SDLTest_RandomSint64(void);
 
-/**
+/*
  * \returns a random float in range [0.0 - 1.0]
  */
 float SDLTest_RandomUnitFloat(void);
 
-/**
+/*
  * \returns a random double in range [0.0 - 1.0]
  */
 double SDLTest_RandomUnitDouble(void);
 
-/**
+/*
  * \returns a random float.
  *
  */
 float SDLTest_RandomFloat(void);
 
-/**
+/*
  * \returns a random double.
  *
  */
 double SDLTest_RandomDouble(void);
 
-/**
+/*
  * Returns a random boundary value for Uint8 within the given boundaries.
  * Boundaries are inclusive, see the usage examples below. If validDomain
  * is true, the function will only return valid boundaries, otherwise non-valid
@@ -166,7 +166,7 @@ double SDLTest_RandomDouble(void);
  */
 Uint8 SDLTest_RandomUint8BoundaryValue(Uint8 boundary1, Uint8 boundary2, SDL_bool validDomain);
 
-/**
+/*
  * Returns a random boundary value for Uint16 within the given boundaries.
  * Boundaries are inclusive, see the usage examples below. If validDomain
  * is true, the function will only return valid boundaries, otherwise non-valid
@@ -187,7 +187,7 @@ Uint8 SDLTest_RandomUint8BoundaryValue(Uint8 boundary1, Uint8 boundary2, SDL_boo
  */
 Uint16 SDLTest_RandomUint16BoundaryValue(Uint16 boundary1, Uint16 boundary2, SDL_bool validDomain);
 
-/**
+/*
  * Returns a random boundary value for Uint32 within the given boundaries.
  * Boundaries are inclusive, see the usage examples below. If validDomain
  * is true, the function will only return valid boundaries, otherwise non-valid
@@ -208,7 +208,7 @@ Uint16 SDLTest_RandomUint16BoundaryValue(Uint16 boundary1, Uint16 boundary2, SDL
  */
 Uint32 SDLTest_RandomUint32BoundaryValue(Uint32 boundary1, Uint32 boundary2, SDL_bool validDomain);
 
-/**
+/*
  * Returns a random boundary value for Uint64 within the given boundaries.
  * Boundaries are inclusive, see the usage examples below. If validDomain
  * is true, the function will only return valid boundaries, otherwise non-valid
@@ -229,7 +229,7 @@ Uint32 SDLTest_RandomUint32BoundaryValue(Uint32 boundary1, Uint32 boundary2, SDL
  */
 Uint64 SDLTest_RandomUint64BoundaryValue(Uint64 boundary1, Uint64 boundary2, SDL_bool validDomain);
 
-/**
+/*
  * Returns a random boundary value for Sint8 within the given boundaries.
  * Boundaries are inclusive, see the usage examples below. If validDomain
  * is true, the function will only return valid boundaries, otherwise non-valid
@@ -251,7 +251,7 @@ Uint64 SDLTest_RandomUint64BoundaryValue(Uint64 boundary1, Uint64 boundary2, SDL
 Sint8 SDLTest_RandomSint8BoundaryValue(Sint8 boundary1, Sint8 boundary2, SDL_bool validDomain);
 
 
-/**
+/*
  * Returns a random boundary value for Sint16 within the given boundaries.
  * Boundaries are inclusive, see the usage examples below. If validDomain
  * is true, the function will only return valid boundaries, otherwise non-valid
@@ -272,7 +272,7 @@ Sint8 SDLTest_RandomSint8BoundaryValue(Sint8 boundary1, Sint8 boundary2, SDL_boo
  */
 Sint16 SDLTest_RandomSint16BoundaryValue(Sint16 boundary1, Sint16 boundary2, SDL_bool validDomain);
 
-/**
+/*
  * Returns a random boundary value for Sint32 within the given boundaries.
  * Boundaries are inclusive, see the usage examples below. If validDomain
  * is true, the function will only return valid boundaries, otherwise non-valid
@@ -293,7 +293,7 @@ Sint16 SDLTest_RandomSint16BoundaryValue(Sint16 boundary1, Sint16 boundary2, SDL
  */
 Sint32 SDLTest_RandomSint32BoundaryValue(Sint32 boundary1, Sint32 boundary2, SDL_bool validDomain);
 
-/**
+/*
  * Returns a random boundary value for Sint64 within the given boundaries.
  * Boundaries are inclusive, see the usage examples below. If validDomain
  * is true, the function will only return valid boundaries, otherwise non-valid
@@ -315,7 +315,7 @@ Sint32 SDLTest_RandomSint32BoundaryValue(Sint32 boundary1, Sint32 boundary2, SDL
 Sint64 SDLTest_RandomSint64BoundaryValue(Sint64 boundary1, Sint64 boundary2, SDL_bool validDomain);
 
 
-/**
+/*
  * Returns integer in range [min, max] (inclusive).
  * Min and max values can be negative values.
  * If Max in smaller than min, then the values are swapped.
@@ -329,7 +329,7 @@ Sint64 SDLTest_RandomSint64BoundaryValue(Sint64 boundary1, Sint64 boundary2, SDL
 Sint32 SDLTest_RandomIntegerInRange(Sint32 min, Sint32 max);
 
 
-/**
+/*
  * Generates random null-terminated string. The minimum length for
  * the string is 1 character, maximum length for the string is 255
  * characters and it can contain ASCII characters from 32 to 126.
@@ -341,7 +341,7 @@ Sint32 SDLTest_RandomIntegerInRange(Sint32 min, Sint32 max);
 char * SDLTest_RandomAsciiString(void);
 
 
-/**
+/*
  * Generates random null-terminated string. The maximum length for
  * the string is defined by the maxLength parameter.
  * String can contain ASCII characters from 32 to 126.
@@ -355,7 +355,7 @@ char * SDLTest_RandomAsciiString(void);
 char * SDLTest_RandomAsciiStringWithMaximumLength(int maxLength);
 
 
-/**
+/*
  * Generates random null-terminated string. The length for
  * the string is defined by the size parameter.
  * String can contain ASCII characters from 32 to 126.
@@ -368,7 +368,8 @@ char * SDLTest_RandomAsciiStringWithMaximumLength(int maxLength);
  */
 char * SDLTest_RandomAsciiStringOfSize(int size);
 
-/**
+
+/*
  * Get the invocation count for the fuzzer since last ...FuzzerInit.
  *
  * \returns the invocation count.