fix XtraDB version to tell the truth

mysql-test/suite/innodb/t/innodb-autoinc.test

@@ -1,6 +1,6 @@
-if (`select plugin_description like '%XtraDB%' and substr(plugin_auth_version,16) <= "34.2" from information_schema.plugins where plugin_name='innodb'`)
+if (`select plugin_auth_version <= "5.5.37-MariaDB-34.0" from information_schema.plugins where plugin_name='innodb'`)
 {
-  --skip Not fixed in XtraDB as of 34.2 or earlier
+  --skip Not fixed in XtraDB as of 5.5.37-MariaDB-34.0 or earlier
 }
 
 --source include/have_innodb.inc

storage/xtradb/include/univ.i

@@ -67,7 +67,7 @@ component, i.e. we show M.N.P as M.N */
 #define PERCONA_INNODB_VERSION 34.0
 #endif
 
-#define INNODB_VERSION_STR	MYSQL_SERVER_VERSION "-" IB_TO_STR(PERCONA_INNODB_VERSION)
+#define INNODB_VERSION_STR	"5.5.37-MariaDB-" IB_TO_STR(PERCONA_INNODB_VERSION)
 
 #define REFMAN "http://dev.mysql.com/doc/refman/"	\
 	IB_TO_STR(MYSQL_MAJOR_VERSION) "."		\