scripts/mysql: fix compatibility issue (#5786)

scripts/mysql.sql

@@ -1,5 +1,11 @@
-SET GLOBAL innodb_file_per_table = ON,
-           innodb_file_format = Barracuda,
-           innodb_large_prefix = ON;
+SET @s = IF(version() < 8 OR version() LIKE '%MariaDB%', 
+            'SET GLOBAL innodb_file_per_table = ON, 
+                        innodb_file_format = Barracuda, 
+                        innodb_large_prefix = ON;', 
+            'SET GLOBAL innodb_file_per_table = ON;');
+PREPARE stmt1 FROM @s;
+EXECUTE stmt1; 
+
 DROP DATABASE IF EXISTS gogs;
 CREATE DATABASE IF NOT EXISTS gogs CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
+