MDEV-12372 mysqlbinlog --version output is the same on 10.x as on 5.5.x, and...

MDEV-12372 mysqlbinlog --version output is the same on 10.x as on 5.5.x, and contains not only version

don't print usage() for --version

client/mysqlbinlog.cc

@@ -2483,10 +2483,11 @@ int main(int argc, char** argv)
 
   if (!argc || opt_version)
   {
-    if (!argc)
-      usage();
     if (!opt_version)
+    {
+      usage();
       retval= ERROR_STOP;
+    }
     goto err;
   }
 

mysql-test/r/mysqlbinlog.result

@@ -1250,3 +1250,4 @@ DELIMITER ;
 ROLLBACK /* added by mysqlbinlog */;
 /*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
 /*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;
+mysqlbinlog Ver VER for OS at ARCH

mysql-test/t/mysqlbinlog.test

@@ -603,3 +603,9 @@ eval SET GLOBAL SERVER_ID = $old_server_id;
 --exec $MYSQL_BINLOG --hexdump std_data/mdev-4645-binlog_group_id.binlog
 --exec $MYSQL_BINLOG --hexdump std_data/mdev-4645-binlog_group_id_checksum.binlog
 --exec $MYSQL_BINLOG --hexdump std_data/mdev-4645-binlog_none.binlog
+
+#
+# MDEV-12372 mysqlbinlog --version output is the same on 10.x as on 5.5.x, and contains not only version
+#
+replace_regex /.*mysqlbinlog(\.exe)? Ver .* for .* at [-_a-zA-Z0-9]+/mysqlbinlog Ver VER for OS at ARCH/;
+exec $MYSQL_BINLOG --version;