Disabled high-level indexes with Aria

... until a few bugs that cause server crash are fixed.

mysql-test/main/vector2.result

+# Aria doesn't support VECTOR yet
+create table t1(v blob not null, vector index(v)) engine=aria;
+ERROR HY000: Table storage engine 'Aria' does not support the create option 'VECTOR'

mysql-test/main/vector2.test

+#
+# tests that don't need to be run on many engines
+#
+
+--echo # Aria doesn't support VECTOR yet
+--error ER_ILLEGAL_HA_CREATE_OPTION
+create table t1(v blob not null, vector index(v)) engine=aria;

storage/maria/ha_maria.cc

@@ -3317,6 +3317,11 @@ int ha_maria::create(const char *name, TABLE *table_arg,
   THD *thd= current_thd;
   DBUG_ENTER("ha_maria::create");
 
+  if (share->total_keys > share->keys)
+  {
+    my_error(ER_ILLEGAL_HA_CREATE_OPTION, MYF(0), "Aria", "VECTOR");
+    DBUG_RETURN(HA_ERR_UNSUPPORTED);
+  }
   for (i= 0; i < share->keys; i++)
   {
     if (table_arg->key_info[i].flags & HA_USES_PARSER)