PREPARE", review fixes:
- make the patch follow the specification of WL#4166 and remove  
the new error that was originally introduced.
Now the client never gets an error from reprepare, unless it failed.
I.e. even if the statement at hand returns a completely different
result set, this is not considered a server error.
The C API library, that can not handle this situation, was modified to
return a client error.
Added additional test coverage.


include/errmsg.h:
  Add a new client side error: now when we automatically
  reprepare a statement, the new result set may contain a different
  number of columns.
include/mysql_com.h:
  Add a new server status to be sent to the client if the 
  number of columns in the result set is different.
libmysql/errmsg.c:
  Add a new error message.
libmysql/libmysql.c:
  Make the client library robust against a result set that
  contains a different number of columns from prepare time.
  Previously that could never happen, and we simply had an assert.
  That means in particular that all clients are advised to upgrade
  with transition to 5.1, if they are using prepared statements C API.
  Make mysql_stmt_store_result() and mysql_stmt_execute() robust against 
  "broken" statement handles (those that have an error).
sql/sql_parse.cc:
  Clear transient server status flags at start of statement more 
  systematically.
sql/share/errmsg.txt:
  Remove an error that is unused and is not part of any public release.
sql/sql_prepare.cc:
  Instead of returning an error in case the number of result set columns
  has changed, simply update the client in server status.
  That will allow modern clients automatically recover from an error.
tests/mysql_client_test.c:
  Add additional coverage to the cases when the number of result
  set columns changed as a result of reprepare.
  Cover conversion and truncation of result set columns.

into  bodhi.(none):/opt/local/work/mysql-5.1-27430


Makefile.am:
  Auto merged
include/my_global.h:
  Auto merged
mysql-test/include/mix1.inc:
  Auto merged
sql/item.cc:
  Auto merged
sql/my_decimal.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/set_var.h:
  Auto merged
sql/sp.cc:
  Auto merged
sql/sp_head.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_class.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged
sql/sql_update.cc:
  Auto merged
sql/share/errmsg.txt:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
libmysqld/CMakeLists.txt:
  Manual merge.
libmysqld/lib_sql.cc:
  Manual merge.
mysql-test/t/disabled.def:
  Manual merge.

into  bodhi.(none):/opt/local/work/mysql-5.1-27430


sql/sql_base.cc:
  Manual merge.

PREPARE": rename members, methods, classes to follow the spec 
(a code review request)


sql/mysql_priv.h:
  enum_metadata_type -> enum_table_ref_type
sql/sp_head.cc:
  Metadata_version_observer -> Reprepare_observer
sql/sql_base.cc:
  metadata -> table_ref
sql/sql_class.cc:
  Replace an abstract interface with a concrete implementation.
sql/sql_class.h:
  enum_metadata_type -> enum_table_ref_type
sql/sql_prepare.cc:
  Move implementation of Execute_observer to sql_class.cc and
  rename the class to Reprepare_observer.
  Use getters instead of direct access to the members.
sql/table.h:
  metadata -> table_ref

Add test target to the makefile that will cause all
statements to be re-prepared before execution.


Makefile.am:
  Add test-reprepare target. In combination with the
  --ps-protocol this will cause that every statement
  in the test suite be re-prepared before execution.
sql/sql_base.cc:
  Re-prepare each statement before execution.

into  mysql.com:/d2/hf/mysql-5.1-bugteam

  rpl_innodb_bug28430 disabled


mysql-test/suite/rpl/t/disabled.def:
  rpl_innodb_bug28430 disabled

into  host.loc:/work/bk/5.1-bugteam


sql/sql_update.cc:
  Auto merged

into  host.loc:/work/bk/5.0-bugteam

                 first row or fails with an error:
  ERROR 1022 (23000): Can't write; duplicate key in table ''

The server uses intermediate temporary table to store updated
row data.  The first column of this table contains rowid.
Current server implementation doesn't reset NULL flag of that
column even if the server fills a column with rowid.
To keep each rowid unique, there is an unique index.
An insertion into an unique index takes into account NULL
flag of key value and ignores real data if NULL flag is set.
So, insertion of actually different rowids may lead to two
kind of problems.  Visible effect of each of these problems
depends on an initial engine type of temporary table:

1. If multiupdate initially creates temporary table as
a MyISAM table (a table contains blob columns, and the
create_tmp_table function assumes, that this table is
large), it inserts only one single row and updates
only rows with one corresponding rowid. Other rows are
silently ignored. 

2. If multiupdate initially creates MEMORY temporary
table, fills it with data and reaches size limit for
MEMORY tables (max_heap_table_size), multiupdate
converts MEMORY table into MyISAM table and fails
with an error:
  ERROR 1022 (23000): Can't write; duplicate key in table ''


Multiupdate has been fixed to update the NULL flag of
temporary table rowid columns.



mysql-test/r/multi_update_tiny_hash.result:
  Added test case for bug#36676.
mysql-test/t/multi_update_tiny_hash-master.opt:
  Added test case for bug#36676.
mysql-test/t/multi_update_tiny_hash.test:
  Added test case for bug#36676.
sql/sql_update.cc:
  Fixed bug#36676: multiupdate using LEFT JOIN updates only
                   first row or fails with an error:
    ERROR 1022 (23000): Can't write; duplicate key in table ''
  
  The multi_update::send_data method has been modified to reset null bits of
  fields containing rowids.

into  magare.gmz:/home/kgeorge/mysql/work/merge-5.1-bugteam


sql/handler.cc:
  Auto merged
configure.in:
  merge 5.0-bugteam to 5.1-bugteam

(Bug#27430)


sql/sql_prepare.cc:
  Fix a simple coding mistake.

"Crash in subquery code when in PS and table DDL changed after PREPARE"


include/my_sys.h:
  Add two new flags for my_error(). These flags help parameterize
  behavoiur of my_message_sql()
sql/item.cc:
  Update comments.
  Fix a typo in Item_param::set_param_type_and_swap_value()
sql/mysqld.cc:
  Implement two additional flags for my_error():
   - if ME_NO_SP_HANDLER is specified, ignore stored procedure continue/
      exit handlers
   - if ME_NO_WARNING_FOR_ERROR is specified, do not push warning
sql/sql_base.cc:
  Update comments.
  Rename a few methods.
sql/sql_class.h:
  Update and improve comments.
sql/sql_prepare.cc:
  Update comments.
  Style changes.
sql/table.h:
  Update comments.
  Style changes.
  Rename a few methods.
tests/mysql_client_test.c:
  Zero the bind array, to follow C API requirements.

temporary variables of 'long' types were used to store ulong values,
that causes init_key_cache to receive distorted parameters


sql/handler.cc:
  Bug #36705 key_buffer_size of >= 2G allocates all availabel virtual memory on 64-bit wondo.
  
  types of temporary variables changed to match init_key_cache() parameters

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.0-bugteam

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.0-bugteam

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.1-bugteam

  updated the testcase for bug 36011


mysql-test/r/subselect.result:
  updated the testcase for bug 36011

into  magare.gmz:/home/kgeorge/mysql/work/B36011-5.1-bugteam


sql/sql_select.cc:
  Auto merged
mysql-test/r/subselect.result:
  merge of bug 36011 to 5.1-bugteam
mysql-test/t/subselect.test:
  merge of bug 36011 to 5.1-bugteam

into  magare.gmz:/home/kgeorge/mysql/autopush/B36011-take2-5.0-bugteam

into  zippy.cornsilk.net:/home/cmiller/work/mysql/bug36570/my51-bug36570


mysql-test/suite/rpl/t/rpl_sp.test:
  Auto merged
mysql-test/suite/rpl/r/rpl_sp.result:
  Use local.  Needs re-recording.

mysql-test/r/ctype_cp932_binlog_stm.result:
  New offsets because of quote marks.
mysql-test/r/mysqlbinlog.result:
  Re-add variables removed in merge at file-vers 1.47.
mysql-test/suite/binlog/r/binlog_database.result:
  create_string() output changes the quoting and inserts newlines.
mysql-test/suite/rpl/r/rpl_innodb_mixed_dml.result:
  Change in quoting.
mysql-test/suite/rpl/r/rpl_sp.result:
  Adds quotes and newlines in creation of routines in binlog.

master also, so that we can visually see the slave is the same.


mysql-test/r/rpl_sp.result:
  SHOW CREATE on master also.
mysql-test/t/rpl_sp.test:
  SHOW CREATE on master also.

into  mats-laptop.(none):/home/bk/b36197-mysql-5.1-bugteam

mysql-test/extra/rpl_tests/rpl_insert_id.test:
  Moving save and restore of @@global.concurrent_insert into the same
  session thread.
mysql-test/suite/rpl/r/rpl_insert_id.result:
  Result file change.
mysql-test/suite/rpl/t/rpl_insert_id.test:
  ***MISSING TEXT***

   with dependent subqueries
An IN subquery is executed on EXPLAIN when it's not correlated.
If the subquery required a temporary table for its execution
not all the internal structures were restored from pointing to
the items of the temporary table to point back to the items of
the subquery.
Fixed by restoring the ref array when a temp tables were used in
executing the IN subquery during EXPLAIN EXTENDED.


mysql-test/r/subselect.result:
  Bug #36011: test case
mysql-test/t/subselect.test:
  Bug #36011: test case
sql/sql_select.cc:
  Bug #36011: restore the ref array after execution 
  when there were temp tables.

into  mysql.com:/Users/davi/mysql/mysql-5.0-bugteam

into  mysql.com:/Users/davi/mysql/mysql-5.1-bugteam

into  zippy.cornsilk.net:/home/cmiller/work/mysql/bug36570/my51-bug36570


mysql-test/suite/rpl/t/rpl_sp.test:
  Auto merged
mysql-test/suite/rpl/r/rpl_sp.result:
  manual merge.

mysql-test/r/rpl_sp.result:
  Add binlog results to show that they're written correctly.
mysql-test/t/rpl_sp.test:
  Add binlog results to show that they're written correctly.

into  mats-laptop.(none):/home/bkroot/mysql-5.1-bugteam

into  pcrews-mac-local.local:/Users/pcrews/usr/local/bin/data0/build_work/test_fix/mysql-5.1-bugteam_35744

into  mats-laptop.(none):/home/bkroot/mysql-5.1-bugteam

into  mats-laptop.(none):/home/bkroot/mysql-5.1-bugteam

into  host.loc:/work/bk/5.0-bugteam

into  host.loc:/work/bk/5.1-bugteam


sql/item_strfunc.cc:
  Auto merged

into  zippy.cornsilk.net:/home/cmiller/work/mysql/bug36570/my51-bug36570


BitKeeper/deleted/.del-binlog_innodb.result:
  Auto merged
sql/sp_head.cc:
  Auto merged
mysql-test/suite/binlog/r/binlog_stm_ctype_ucs.result:
  need to re-record.
mysql-test/suite/rpl/r/rpl_sp.result:
  need to re-record.
mysql-test/r/mysqlbinlog.result:
  manual merge.
mysql-test/suite/rpl/t/rpl_sp.test:
  manual merge.
sql/sp.cc:
  manual merge.
sql/sp_head.h:
  manual merge.

into  pcrews-mac-local.local:/Users/pcrews/usr/local/bin/data0/build_work/test_fix/mysql-5.1-bugteam_35744