Merge with 5.1-release.

- Fixed problem with oqgraph and 'make dist'

Note that after this merge we have a problem show in join_outer where we examine too many rows in one specific case (related to BUG#57024).
This will be fixed when mwl#128 is merged into 5.3.

mysql-test/suite/innodb_plugin/r/innodb_mysql.result

@@ -2393,4 +2393,14 @@ a
 2
 UPDATE t1,t2 SET t1.a = t1.a + 100 WHERE t1.a = 1;
 DROP TABLE t1,t2;
+#
+# Bug#54606 innodb fast alter table + pack_keys=0 
+#           prevents adding new indexes
+#
+CREATE TABLE t1 (a INT, b CHAR(9), c INT, key(b)) 
+ENGINE=InnoDB 
+PACK_KEYS=0;
+CREATE INDEX a ON t1 (a);
+CREATE INDEX c on t1 (c);
+DROP TABLE t1;
 End of 5.1 tests