Backport SDL patch to fix XData32.  Add a patch to fix packaged
autoconfiguration file.

# HG changeset patch
# User Azamat H. Hackimov <azamat.hackimov@gmail.com>
# Date 1370184533 -21600
# Node ID 91ad7b43317a6387e115ecdf63a49137f47e42c8
# Parent  f7fd5c3951b9ed922fdf696f7182e71b58a13268
Fix compilation with libX11 >= 1.5.99.902.

These changes fixes bug #1769 for SDL 1.2
(http://bugzilla.libsdl.org/show_bug.cgi?id=1769).

--- a/src/video/x11/SDL_x11sym.h	Wed Apr 17 00:56:53 2013 -0700
+++ b/src/video/x11/SDL_x11sym.h	Sun Jun 02 20:48:53 2013 +0600
@@ -165,7 +165,11 @@
  */
 #ifdef LONG64
 SDL_X11_MODULE(IO_32BIT)
+#if SDL_VIDEO_DRIVER_X11_CONST_PARAM_XDATA32
+SDL_X11_SYM(int,_XData32,(Display *dpy,register _Xconst long *data,unsigned len),(dpy,data,len),return)
+#else
 SDL_X11_SYM(int,_XData32,(Display *dpy,register long *data,unsigned len),(dpy,data,len),return)
+#endif
 SDL_X11_SYM(void,_XRead32,(Display *dpy,register long *data,long len),(dpy,data,len),)
 #endif
 
--- a/configure.in	2012-01-19 01:30:05.000000000 -0500
+++ b/configure.in	2014-07-19 14:06:33.567066824 -0400
@@ -1127,6 +1127,17 @@
             if test x$definitely_enable_video_x11_xrandr = xyes; then
                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XRANDR)
             fi
+            AC_MSG_CHECKING(for const parameter to _XData32)
+            have_const_param_xdata32=no
+            AC_TRY_COMPILE([
+              #include <X11/Xlibint.h>
+              extern int _XData32(Display *dpy,register _Xconst long *data,unsigned len);
+            ],[
+            ],[
+            have_const_param_xdata32=yes
+            AC_DEFINE(SDL_VIDEO_DRIVER_X11_CONST_PARAM_XDATA32)
+            ])
+            AC_MSG_RESULT($have_const_param_xdata32)
         fi
     fi
 }
--- a/configure	2012-01-19 01:30:12.000000000 -0500
+++ b/configure	2014-07-19 14:09:05.780782908 -0400
@@ -24440,6 +24440,50 @@
 _ACEOF
 
             fi
+            { echo "$as_me:$LINENO: checking for const parameter to _XData32" >&5
+echo $ECHO_N "checking for const parameter to _XData32... " >&6; }
+            have_const_param_xdata32=no
+            cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+              #include <X11/Xlibint.h>
+              extern int _XData32(Display *dpy,register _Xconst long *data,unsigned len);
+
+int
+main ()
+{
+
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_link") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext &&
+       $as_test_x conftest$ac_exeext; then
+            have_const_param_xdata32=yes
+            cat >>confdefs.h <<\_ACEOF
+#define SDL_VIDEO_DRIVER_X11_CONST_PARAM_XDATA32 1
+_ACEOF
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+            { echo "$as_me:$LINENO: result: $have_const_param_xdata32" >&5
+echo "${ECHO_T}$have_const_param_xdata32" >&6; }
         fi
     fi
 }
--- a/include/SDL_config.h.in	2012-01-19 01:30:05.000000000 -0500
+++ b/include/SDL_config.h.in	2014-07-19 14:06:33.567066824 -0400
@@ -282,6 +282,7 @@
 #undef SDL_VIDEO_DRIVER_WINDIB
 #undef SDL_VIDEO_DRIVER_WSCONS
 #undef SDL_VIDEO_DRIVER_X11
+#undef SDL_VIDEO_DRIVER_X11_CONST_PARAM_XDATA32
 #undef SDL_VIDEO_DRIVER_X11_DGAMOUSE
 #undef SDL_VIDEO_DRIVER_X11_DYNAMIC
 #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT