(BUG#1537)

correct bug 1085 (a problem with min/max functions)
add tests of bugs 833,836,1085

tmp_table_field() renamed to get_tmp_table_field() to avoid redifinition of tmp_table_field(TABLE *t_arg)

correct bugs #833 and #836

aggregate function reinitialization (if no rows was found) made with help of clear()
(fixed BUG#860)

Change metadata info so that that MIN() and code MAX() reports that they can return NULL. Bug #324

fixed bug in Item_sum
fixed bug in dependence remover
after merge fix

Set min value of max_allowed_packet to 1024
Fixed problem with UNION's without braces and SQL_CALC_FOUND_ROWS, LIMIT #,#
and ORDER BY...LIMIT

CREATE TABLE t1 (s1 CHAR(5) CHARACTER SET latin1 COLLATE latin1_german2_ci);
INSERT INTO t1 VALUES ('Ü');
INSERT INTO t1 VALUES ('ue');
SELECT DISTINCT s1 FROM t1;

The above returned two rows in error.
Now it returns one row, in latin1_german2_ci:  Ü == ue

by MAX/MIN in some cases:
SELECT coercibility(max(s1)) from t1;

Subselect collation and derivation was not processed
correctly:

create table a select (select s1 from t1);
select * from t1 where s1 = (select s2 from t1);

independent ALL/ANY subselect on top of WHERE clause (subselect without GROUP BY or aggregate functions) optimisation

(SCRUM) (WL#1086)

fixed test func_gconcat to be repeatable independent of presend tables and avoid removing user tables

initialization of item_thd moved to constructor (in any case we need thd in constructor)
initialization of group_concat_max_len to constructor to avoid incorrect length reporting (BUG#757)
removed Item_func_group_concat::fix_length_and_dec() because item have its own fix_fields and will not have inherited items

It looks like samll revolution in SELECT_LEX tree, but it was only natural way to solve problem with name resolution of external fields inside subselect which belongs to global order of union
also it have following advantages:
 - removed mess with current_select type conversion
   - type checking/converting
   - a lot of virtual methods
 - fake select for union execution allocated only once (it was allocated for every subselect with union executing)

changes:
fixed bug with outer fields name resolution of subqueries which belong to global ORDER BY clause
remuved select_lex() function, now thd->lex.current_select always have type SELECT_LEX
new SELECT_LEX (fake_select_lex) will be allocated in case of UNION for using in UNION processing
fake_select_lex allocated for union hold global ORDER BY & LIMIT clauses and have linkage equal to GLOBAL_OPTIONS_TYPE 
new description of SELECT_LEX tree

(SCRUM)

Updated VC++ files

bmove_allign -> bmove_align
Added OLAP function ROLLUP
Split mysql_fix_privilege_tables to a script and a .sql data file
Added new (MEMROOT*) functions to avoid calling current_thd() when creating some common objects.
Added table_alias_charset, for easier --lower-case-table-name handling
Better SQL_MODE handling (Setting complex options also sets sub options)
New (faster) assembler string functions for x86

correct bug with empty table

SCRUM
BUG
correct wrong code in group_concat

Fixed memory leak in new filesort code
Optimzed sub selects to use keys with outer references.
Increased max tables in join to 62

Added optimzation for clustered index
Fixed bug in UPDATE ... ORDER BY
Fixed handling of UPDATE ... LIMIT

Remove the 'fs' file systems as this is not maintained.
Moved programs from client to tests

Added logging of warnings for failed connections with ssl.
Fixed bug in symbolic link handling on Windows

correct sql_alloc, ORDER BY and NULL value in group_concat
add comments
move test msg_arg
add test on NULL

into the only one sortcmp() with additional
CHARSET_INFO *cmp_charset argument.

like number-to-string-convertion-result, now 
takes current database character set, instead of
thread character set. This makes it easy to be
SQL99 conformant and 4.0 compatible.

Item->thd_charset() is renamed to Item->default_charset()
as old name doesn't describe its nature anymore.

  Fixed that MIN() didn't return proper charset for CREATE from SELECT