Update for SDL3 coding style (#6717)

I updated .clang-format and ran clang-format 14 over the src and test directories to standardize the code base.

In general I let clang-format have it's way, and added markup to prevent formatting of code that would break or be completely unreadable if formatted.

The script I ran for the src directory is added as build-scripts/clang-format-src.sh

This fixes:
#6592
#6593
#6594

src/SDL_internal.h

@@ -40,9 +40,14 @@
 #define SDL_VARIABLE_LENGTH_ARRAY
 #endif
 
-#define SDL_MAX_SMALL_ALLOC_STACKSIZE 128
-#define SDL_small_alloc(type, count, pisstack) ( (*(pisstack) = ((sizeof(type)*(count)) < SDL_MAX_SMALL_ALLOC_STACKSIZE)), (*(pisstack) ? SDL_stack_alloc(type, count) : (type*)SDL_malloc(sizeof(type)*(count))) )
-#define SDL_small_free(ptr, isstack) if ((isstack)) { SDL_stack_free(ptr); } else { SDL_free(ptr); }
+#define SDL_MAX_SMALL_ALLOC_STACKSIZE          128
+#define SDL_small_alloc(type, count, pisstack) ((*(pisstack) = ((sizeof(type) * (count)) < SDL_MAX_SMALL_ALLOC_STACKSIZE)), (*(pisstack) ? SDL_stack_alloc(type, count) : (type *)SDL_malloc(sizeof(type) * (count))))
+#define SDL_small_free(ptr, isstack) \
+    if ((isstack)) {                 \
+        SDL_stack_free(ptr);         \
+    } else {                         \
+        SDL_free(ptr);               \
+    }
 
 #include "dynapi/SDL_dynapi.h"
 
@@ -68,97 +73,96 @@
 #include <stdio.h>
 #endif
 #if defined(HAVE_STDLIB_H)
-# include <stdlib.h>
+#include <stdlib.h>
 #elif defined(HAVE_MALLOC_H)
-# include <malloc.h>
+#include <malloc.h>
 #endif
 #if defined(HAVE_STDDEF_H)
-# include <stddef.h>
+#include <stddef.h>
 #endif
 #if defined(HAVE_STDARG_H)
-# include <stdarg.h>
+#include <stdarg.h>
 #endif
 #ifdef HAVE_STRING_H
-# ifdef HAVE_MEMORY_H
-#  include <memory.h>
-# endif
-# include <string.h>
+#ifdef HAVE_MEMORY_H
+#include <memory.h>
+#endif
+#include <string.h>
 #endif
 #ifdef HAVE_STRINGS_H
-# include <strings.h>
+#include <strings.h>
 #endif
 #ifdef HAVE_WCHAR_H
-# include <wchar.h>
+#include <wchar.h>
 #endif
 #if defined(HAVE_INTTYPES_H)
-# include <inttypes.h>
+#include <inttypes.h>
 #elif defined(HAVE_STDINT_H)
-# include <stdint.h>
+#include <stdint.h>
 #endif
 #ifdef HAVE_CTYPE_H
-# include <ctype.h>
+#include <ctype.h>
 #endif
 #ifdef HAVE_MATH_H
-# include <math.h>
+#include <math.h>
 #endif
 #ifdef HAVE_FLOAT_H
-# include <float.h>
+#include <float.h>
 #endif
 
-
 /* If you run into a warning that O_CLOEXEC is redefined, update the SDL configuration header for your platform to add HAVE_O_CLOEXEC */
 #ifndef HAVE_O_CLOEXEC
-#define O_CLOEXEC                       0
+#define O_CLOEXEC 0
 #endif
 
 /* A few #defines to reduce SDL footprint.
    Only effective when library is statically linked.
    You have to manually edit this file. */
 #ifndef SDL_LEAN_AND_MEAN
-#define SDL_LEAN_AND_MEAN               0
+#define SDL_LEAN_AND_MEAN 0
 #endif
 
 /* Optimized functions from 'SDL_blit_0.c'
    - blit with source BitsPerPixel < 8, palette */
 #ifndef SDL_HAVE_BLIT_0
-#define SDL_HAVE_BLIT_0                 !SDL_LEAN_AND_MEAN
+#define SDL_HAVE_BLIT_0 !SDL_LEAN_AND_MEAN
 #endif
 
 /* Optimized functions from 'SDL_blit_1.c'
    - blit with source BytesPerPixel == 1, palette */
 #ifndef SDL_HAVE_BLIT_1
-#define SDL_HAVE_BLIT_1                 !SDL_LEAN_AND_MEAN
+#define SDL_HAVE_BLIT_1 !SDL_LEAN_AND_MEAN
 #endif
 
 /* Optimized functions from 'SDL_blit_A.c'
    - blit with 'SDL_BLENDMODE_BLEND' blending mode */
 #ifndef SDL_HAVE_BLIT_A
-#define SDL_HAVE_BLIT_A                 !SDL_LEAN_AND_MEAN
+#define SDL_HAVE_BLIT_A !SDL_LEAN_AND_MEAN
 #endif
 
 /* Optimized functions from 'SDL_blit_N.c'
    - blit with COLORKEY mode, or nothing */
 #ifndef SDL_HAVE_BLIT_N
-#define SDL_HAVE_BLIT_N                 !SDL_LEAN_AND_MEAN
+#define SDL_HAVE_BLIT_N !SDL_LEAN_AND_MEAN
 #endif
 
 /* Optimized functions from 'SDL_blit_N.c'
    - RGB565 conversion with Lookup tables */
 #ifndef SDL_HAVE_BLIT_N_RGB565
-#define SDL_HAVE_BLIT_N_RGB565          !SDL_LEAN_AND_MEAN
+#define SDL_HAVE_BLIT_N_RGB565 !SDL_LEAN_AND_MEAN
 #endif
 
 /* Optimized functions from 'SDL_blit_AUTO.c'
    - blit with modulate color, modulate alpha, any blending mode
    - scaling or not */
 #ifndef SDL_HAVE_BLIT_AUTO
-#define SDL_HAVE_BLIT_AUTO              !SDL_LEAN_AND_MEAN
+#define SDL_HAVE_BLIT_AUTO !SDL_LEAN_AND_MEAN
 #endif
 
 /* Run-Length-Encoding
    - SDL_SetColorKey() called with SDL_RLEACCEL flag */
 #ifndef SDL_HAVE_RLE
-#define SDL_HAVE_RLE                    !SDL_LEAN_AND_MEAN
+#define SDL_HAVE_RLE !SDL_LEAN_AND_MEAN
 #endif
 
 /* Software SDL_Renderer
@@ -166,14 +170,14 @@
    - *not* general blitting functions
    - {blend,draw}{fillrect,line,point} internal functions */
 #ifndef SDL_VIDEO_RENDER_SW
-#define SDL_VIDEO_RENDER_SW             !SDL_LEAN_AND_MEAN
+#define SDL_VIDEO_RENDER_SW !SDL_LEAN_AND_MEAN
 #endif
 
 /* YUV formats
    - handling of YUV surfaces
    - blitting and conversion functions */
 #ifndef SDL_HAVE_YUV
-#define SDL_HAVE_YUV                    !SDL_LEAN_AND_MEAN
+#define SDL_HAVE_YUV !SDL_LEAN_AND_MEAN
 #endif
 
 #include <SDL3/SDL.h>