Update _XData32 declaration in SDL_x11sym.h to match that of libx11 1.6.

--- SDL-1.2.15/src/video/x11/SDL_x11sym.h.~1~	2012-01-19 01:30:06.000000000 -0500
+++ SDL-1.2.15/src/video/x11/SDL_x11sym.h	2014-12-26 00:22:36.445067694 -0500
@@ -165,7 +165,7 @@
  */
 #ifdef LONG64
 SDL_X11_MODULE(IO_32BIT)
-SDL_X11_SYM(int,_XData32,(Display *dpy,register long *data,unsigned len),(dpy,data,len),return)
+SDL_X11_SYM(int,_XData32,(Display *dpy,register _Xconst long *data,unsigned len),(dpy,data,len),return)
 SDL_X11_SYM(void,_XRead32,(Display *dpy,register long *data,long len),(dpy,data,len),)
 #endif
 
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<tr><td><span title='2021-12-30 21:32:44 +0100'>2021-12-30</span></td><td><a href='/guix/commit/gnu/packages/patches/libsequoia-remove-store.patch?id=e0573838487a5ca00031448210d782e3737333c0'>gnu: Add libsequoia.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/sequoia.scm (sequoia-package-origin): New variable.
  (libsequoia): New variable.
* gnu/packages/patches/sequoia-fix-ffi-Makefile.patch,
  gnu/packages/patches/sequoia-remove-store.patch New files.
* gnu/local.mk (dist_patch_DATA): Add them.
</span></span></td><td>Hartmut Goebel</td></tr>