Applied InnoDB snapshot innodb-5.1-ss2298

Fixes the following bugs:

- Bug #33349: possible race condition revolving around data dictionary and repartitioning
  Introduce retry/sleep logic as a workaround for a transient bug
  where ::open fails for partitioned tables randomly if we are using
  one file per table.

- Bug #34053: normal users can enable innodb_monitor logging
  In CREATE TABLE and DROP TABLE check whether the table in question is one
  of the magic innodb_monitor tables and whether the user has enough rights
  to mess with it before doing anything else.

- Bug #22868: 'Thread thrashing' with > 50 concurrent conns under an upd-intensive workloadw
- Bug #29560: InnoDB >= 5.0.30 hangs on adaptive hash rw-lock 'waiting for an X-lock'
  This is a combination of changes that forward port the scalability fix applied to 5.0
  through r1001.
  It reverts changes r149 and r122 (these were 5.1 specific changes made in lieu of
  scalability fix of 5.0)
  Then it applies r1001 to 5.0 which is the original scalability fix.
  Finally it applies r2082 which fixes an issue with the original fix.

- Bug #30930: Add auxiliary function to retrieve THD::thread_id
  Add thd_get_thread_id() function.  Also make check_global_access() function
  visible to InnoDB under INNODB_COMPATIBILITY_HOOKS #define.

mysql-test/t/innodb.test

@@ -752,6 +752,38 @@ select count(*) from t2 /* must be 2 as restored after rollback caused by the er
 drop table t1, t2;
 
 
+#
+# Bug #29136  	erred multi-delete on trans table does not rollback 
+#
+
+# prepare
+--disable_warnings
+drop table if exists t1, t2;
+--enable_warnings
+CREATE TABLE t1 (a int, PRIMARY KEY (a));
+CREATE TABLE t2 (a int, PRIMARY KEY (a)) ENGINE=InnoDB;
+create trigger trg_del_t2 after  delete on t2 for each row
+       insert into t1 values (1);
+insert into t1 values (1);
+insert into t2 values (1),(2);
+
+
+# exec cases A, B - see multi_update.test
+
+# A. send_error() w/o send_eof() branch
+
+--error ER_DUP_ENTRY
+delete t2 from t2;
+
+# check
+
+select count(*) from t2 /* must be 2 as restored after rollback caused by the error */;
+
+# cleanup bug#29136
+
+drop table t1, t2;
+
+
 #
 # Testing of IFNULL
 #