indexed BLOBs for ROW_FORMAT=DYNAMIC and ROW_FORMAT_COMPRESSED tables
(Bug #52746). In these tables, the locally stored prefix of a BLOB can
be as small as 20 bytes (BTR_EXTERN_FIELD_REF_SIZE). ROW_FORMAT=REDUNDANT
and ROW_FORMAT=COMPACT store a prefix of 768 bytes (REC_MAX_INDEX_COL_LEN).

trx_undo_rec_get_col_val(): Relax the ut_ad() assertion and add a
reference to dtuple_convert_big_rec().

trx_undo_rec_get_partial_row(): Relax the ut_a() assertion that
prompted Bug #52746.

the InnoDB Plugin tests are now in mysql-test/suite/innodb_plugin.

Move InnoDB tests to the innodb suite at mysql-test/suite/innodb.

This also instructs mtr to transparently load the plugin.

MySQL and InnoDB dictionaries do not get out of sync.

they are ignored to a new test suite "innodb_plugin".

Remove a hack in mtr that was deployed to run the builtin InnoDB tests against
the InnoDB Plugin. Also detect if a test is an 'innodb plugin test' and if so
then transparently replace the builtin InnoDB with the InnoDB Plugin.

in behavior in InnoDB. The change in behavior was introduced by this
changeset:

  ------------------------------------------------------------
  revno: 3370
  revision-id: vasil.dimov@oracle.com-20100331130613-8ja7n0vh36a80457
  parent: vasil.dimov@oracle.com-20100331130440-l0y517y3mjsjqy4v
  parent: vasil.dimov@oracle.com-20100331113119-2kbgkaz1d426a43c
  committer: Vasil Dimov <vasil.dimov@oracle.com>
  branch nick: mysql-5.1-innodb
  timestamp: Wed 2010-03-31 16:06:13 +0300
  message:
    Merge from innodb-branches-5.1
      ------------------------------------------------------------
      revno: 0.1.819
      revision-id: vasil.dimov@oracle.com-20100331113119-2kbgkaz1d426a43c
      parent: vasil.dimov@oracle.com-20100331064722-9rc3wypzmer7d6jj
      parent: svn-v4:cee13dc7-1704-0410-992b-c9b4543f1246:branches/5.1:6918
      committer: Vasil Dimov <vasil.dimov@oracle.com>
      branch nick: innodb-branches-5.1
      timestamp: Wed 2010-03-31 14:31:19 +0300
      message:
        Merge from SVN
          ------------------------------------------------------------
          revno: 0.2.1
          revision-id: svn-v4:cee13dc7-1704-0410-992b-c9b4543f1246:branches/5.1:6918
          parent: svn-v4:cee13dc7-1704-0410-992b-c9b4543f1246:branches/5.1:6912
          committer: mmakela
          timestamp: Wed 2010-03-31 07:14:51 +0000
          message:
            branches/5.1: Obey KILL during a lock wait (Bug #51920).
  
            srv_suspend_mysql_thread(), srv_lock_timeout_and_monitor_thread():
            Check trx_is_interrupted() in addition to checking the lock wait timeout.
  
            rb://279 approved by Sunny Bains

The change in behavior was introduced by this changeset:

  ------------------------------------------------------------
  revno: 3405
  revision-id: joro@sun.com-20100317141846-es0qyf5zcqb0hu1c
  parent: davi.arnaut@sun.com-20100309125156-z2c4uyqque49v61k
  committer: Georgi Kodinov <joro@sun.com>
  branch nick: B49838-5.1-bugteam
  timestamp: Wed 2010-03-17 16:18:46 +0200
  message:
    Bug #49838: DROP INDEX and ADD UNIQUE INDEX for same index may corrupt
       definition at engine
    
    If a single ALTER TABLE contains both DROP INDEX and ADD INDEX using 
    the same index name (a.k.a. index modification) we need to disable 
    in-place alter table because we can't ask the storage engine to have 
    two copies of the index with the same name even temporarily (if we 
    first do the ADD INDEX and then DROP INDEX) and we can't modify 
    indexes that are needed by e.g. foreign keys if we first do 
    DROP INDEX and then ADD INDEX.
    Fixed the problem by disabling in-place ALTER TABLE for these cases.
  modified:
    mysql-test/r/innodb_mysql.result sp1f-innodb_mysql.result-20060426055153-bychbbfnqtvmvrwccwhn24i6yi46uqjv
    mysql-test/t/innodb_mysql.test sp1f-innodb_mysql.test-20060816102624-6ymo37d3nyhvbqyzqn5ohsfuydwo426k
    sql/sql_table.cc               sp1f-sql_table.cc-19700101030959-tzdkvgigezpuaxnldqh3fx2h7h2ggslu

Repply changes to storage/innodb_plugin/mysql-test/innodb_bug42101-nonzero-master.opt that were made by MySQL

Move ut_ad() to after declarations for C file.

about wrong innodb_change_buffering value.  Reported by Ranger.

Stick to C90, because some build platforms are not C99 yet.