When expanding a * in a USING/NATURAL join the check for table access
for both tables in the join was done using the grant information of the
first one.
Fixed by getting the grant information for the current table while 
iterating through the columns of the join.

into  magare.gmz:/home/kgeorge/mysql/autopush/B30377-5.0-opt

into  linux-st28.site:/home/martin/mysql/src/bugx/my50-bugx

Currently the Last_query_cost session status variable shows
only the cost of a single flat subselect. For complex queries
(with subselects or unions etc) Last_query_cost is not valid
as it was showing the cost for the last optimized subselect.
Fixed by reseting to zero Last_query_cost when the complete
cost of the query cannot be determined.
Last_query_cost will be non-zero only for single flat queries.

The optimization that uses a unique index to remove GROUP BY, did not 
ensure that the index was actually used, thus violating the ORDER BY
that is impled by GROUP BY.
Fixed by replacing GROUP BY with ORDER BY if the GROUP BY clause contains
a unique index. In case GROUP BY ... ORDER BY null is used, GROUP BY is
simply removed.

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

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

  Additional fix for the bug#30245.

into  a88-113-38-195.elisa-laajakaista.fi:/home/my/bk/mysql-5.0-marvel

into  moonbone.local:/mnt/gentoo64/work/30245-bug-5.0-opt-mysql

into  trift2.:/MySQL/M50/push-5.0

1) Ensure "init_db.sql" and "test_db-sql" really get built.

2) Ensure the "*.def" files with NetWare linker options get distributed to the proper directories.

into  a88-113-38-195.elisa-laajakaista.fi:/home/my/bk/mysql-5.0-marvel

into  trift2.:/MySQL/M50/push-5.0

into  trift2.:/MySQL/M50/push-5.0

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build

into  bk-internal.mysql.com:/users/gshchepa/mysql-5.0-opt

into  trift2.:/MySQL/M50/push-5.0

1) We do not provide the "isam" table handler in 5.0 and up (different from "myisam" !),
   so we do not need the ".def" files for the "isam"-specific tools.

2) Use "basename" to get the base name of a file, not a harder-to-read sed expression.

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

into  hynda.mysql.fi:/home/my/mysql-5.0-marvel

Killing a SELECT query with KILL QUERY or KILL CONNECTION
causes a server crash if the query cache is enabled.

Normal evaluation of a query may be interrupted by the
KILL QUERY/CONNECTION statement, in this case the mysql_execute_command
function returns TRUE, and the thd->killed flag has true value.
In this case the result of the query may
be cached incompletely (omitting call to query_cache_insert inside
the net_real_write function), and next call to query_cache_end_of_result
may lead to server crash.
Thus, the query_cache_end_of_result function has been modified to abort
query cache in the case of killed thread.

into  trift2.:/MySQL/M50/push-5.0

into  hynda.mysql.fi:/home/my/mysql-5.0-marvel

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

into  adventure.(none):/home/thek/Development/cpp/mysql-5.0-runtime

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

into  mysql.com:/home/gluh/MySQL/Merge/5.0-opt

Although the query cache doesn't support retrieval of statements containing
column level access control, it was still possible to cache such statements
thus wasting memory.
  
This patch extends the access control check on the target tables to avoid
caching a statement with column level restrictions. 

Views are excepted and can be cached but only retrieved by super user account.

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

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

The server created temporary tables for filesort in the working directory
instead of the specified tmpdir directory.

into  weblab.(none):/home/marcsql/TREE/mysql-5.0-rt-merge

into  mysql.com:/home/gluh/MySQL/Merge/5.0-opt

added SUPER_ACL check for I_S.TRIGGERS

into  ramayana.hindu.god:/home/tsmith/m/bk/maint/50

into  adventure.(none):/home/thek/Development/cpp/mysql-5.0-runtime

Although the query cache doesn't support retrieval of statements containing
column level access control, it was still possible to cache such statements
thus wasting memory.

This patch extends the access control check on the target tables to avoid
caching a statement with column level restrictions.