When a table is being updated it has two set of fields - fields required for
checks of conditions and fields to be updated. A storage engine is allowed
not to retrieve columns marked for update. Due to this fact records can't
be compared to see whether the data has been changed or not. This makes the
server always update records independently of data change.

Now when an auto-updatable timestamp field is present and server sees that
a table handle isn't going to retrieve write-only fields then all of such
fields are marked as to be read to force the handler to retrieve them.

into  gleb.loc:/home/uchum/work/bk/5.1-opt

into  gleb.loc:/home/uchum/work/bk/5.1-opt

into  gleb.loc:/home/uchum/work/bk/5.0-opt

into  gleb.loc:/home/uchum/work/bk/5.1-opt

if item_func->argument_count()==0

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

  Updated test case for bug #29294.

into  gleb.loc:/home/uchum/work/bk/5.0-opt

into  gleb.loc:/home/uchum/work/bk/4.1-opt

  Test case update for bug #29294.

  Windows compilation error fix.

The `SELECT 'r' INTO OUTFILE ... FIELDS ENCLOSED BY 'r' ' statement
encoded the 'r' string to a 4 byte string of value x'725c7272'
(sequence of 4 characters: r\rr).
The LOAD DATA statement decoded this string to a 1 byte string of
value x'0d' (ASCII Carriage Return character) instead of the original
'r' character.
The same error also happened with the FIELDS ENCLOSED BY clause
followed by special characters: 'n', 't', 'r', 'b', '0', 'Z' and 'N'.

NOTE 1: This is a result of the undocumented feature: the LOAD DATA INFILE
recognises 2-byte input sequences like \n, \t, \r and \Z in addition
to documented 2-byte sequences: \0 and \N. This feature should be
documented (here backspace character is a default ESCAPED BY character,
in the real-life example it may be any ESCAPED BY character).

NOTE 2, changed behaviour:
Now the `SELECT INTO OUTFILE' statement with the `FIELDS ENCLOSED BY'
clause followed by one of: 'n', 't', 'r', 'b', '0', 'Z' or 'N' characters
encodes this special character itself by doubling it ('r' --> 'rr'),
not by prepending it with an escape character.

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.1-new-rpl

into  mysql.com:/home/bar/mysql-work/mysql-5.1-new-rpl

into  mysql.com:/home/bar/mysql-work/mysql-5.0.b27345

into  magare.gmz:/home/kgeorge/mysql/autopush/B28983-2-5.0-opt

asserts debug binary

We can't reliably check if the binary log is opened without 
acquiring its mutex. 
Fixed by removing this check.

into  perch.ndb.mysql.com:/home/jonas/src/mysql-5.1-new-ndb

into  perch.ndb.mysql.com:/home/jonas/src/51-telco-gca

  Not very clever fix for DIH incorrect REDO handling
  - Dont report GCP_SAVE_CONF until first LCP has been complete during NR

into  dator6.(none):/home/mikael/mysql_clones/bug18198

into  mysql.com:/nfsdisk1/lars/bk/mysql-5.1-new-rpl

into  mysql.com:/nfsdisk1/lars/bk/mysql-5.0-rpl

into  mysql.com:/nfsdisk1/lars/bk/mysql-5.1-new-rpl

into  mysql.com:/nfsdisk1/lars/bk/mysql-5.0-rpl

into  perch.ndb.mysql.com:/home/jonas/src/mysql-5.1-new-ndb

into  perch.ndb.mysql.com:/home/jonas/src/51-telco-gca

  In TC init node status for already started nodes during node restart
  (not present in 5.1)

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-5.1-merge

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-5.0-merge

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-4.1-merge

This bug may manifest itself not only with the queries for which
the index-merge access method is chosen. It also may display
itself for queries with DISTINCT.

The bug was in how the Unique::get method used the merge_buffers
function. To compare elements in the the queue employed by
merge_buffers() it must use the buffpek_compare function rather
than the function for binary comparison. 

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