patch 9.1.0691: python3: stable-abi may cause segfault on Python 3.11

Problem:  python3: stable-abi may cause segfault on Python 3.11
          (Audrius Kažukauskas, after v9.1.0668)
Solution: do not enable the stable Python ABI by default, only when used
          with --with-python3-stable-abi argument is given

related: #15543

Signed-off-by: Christian Brabandt <cb@256bit.org>

src/auto/configure

@@ -7099,14 +7099,9 @@ then :
      fi
      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $vi_cv_var_python3_stable_abi" >&5
 printf "%s\n" "$vi_cv_var_python3_stable_abi" >&6; }
-else $as_nop
-
-	 vi_cv_var_python3_stable_abi=$python3_stable_abi_default
-	 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no. defaults to $python3_stable_abi_default." >&5
-printf "%s\n" "no. defaults to $python3_stable_abi_default." >&6; }
 fi
 
-      if test "X$vi_cv_var_python3_stable_abi" != "Xno"; then
+      if test "X$vi_cv_var_python3_stable_abi" != "X"; then
         if test ${vi_cv_var_python3_stable_abi_hex+y}
 then :
   printf %s "(cached) " >&6

src/configure.ac

@@ -1549,11 +1549,8 @@ if test "$enable_python3interp" = "yes" -o "$enable_python3interp" = "dynamic";
      else
        vi_cv_var_python3_stable_abi="$withval"
      fi
-	 AC_MSG_RESULT($vi_cv_var_python3_stable_abi)],
+     AC_MSG_RESULT($vi_cv_var_python3_stable_abi)])
-        [
+      if test "X$vi_cv_var_python3_stable_abi" != "X"; then
-	 vi_cv_var_python3_stable_abi=$python3_stable_abi_default
-	 AC_MSG_RESULT(no. defaults to $python3_stable_abi_default.)])
-      if test "X$vi_cv_var_python3_stable_abi" != "Xno"; then
         AC_CACHE_VAL(vi_cv_var_python3_stable_abi_hex,
         [
          vi_cv_var_python3_stable_abi_hex=`

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    691,
 /**/
     690,
 /**/