ha_innobase.cc Improved error message in the case the .frm file exists but...

ha_innobase.cc	Improved error message in the case the .frm file exists but InnoDB data dictionary does not conatin the table

sql/ha_innobase.cc

@@ -679,7 +679,7 @@ ha_innobase::bas_ext() const
 				/* out: file extension strings, currently not
 				used */
 {
-	static const char* ext[] = {".not_used", NullS};
+	static const char* ext[] = {".InnoDB_table_inside_tablespace", NullS};
 
 	return(ext);
 }
@@ -779,6 +779,14 @@ ha_innobase::open(
 
  	if (NULL == (ib_table = dict_table_get(norm_name, NULL))) {
 
+	  fprintf(stderr, "InnoDB: Cannot find table %s from the internal\n"
+		  "InnoDB: data dictionary of InnoDB though the .frm file\n"
+		  "InnoDB: for the table exists. Maybe you have deleted\n"
+		  "InnoDB: and created again an InnoDB database but\n"
+                  "InnoDB: forgotten to delete the corresponding\n"
+		  "InnoDB: .frm files of old InnoDB tables?\n",
+		  norm_name);
+
 	        free_share(share);
     		my_free((char*) upd_buff, MYF(0));
     		my_errno = ENOENT;