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


mysql-test/r/func_gconcat.result:
  removed warning in test
  fixed table tnames (should be tN, where N is number)
mysql-test/t/func_gconcat.test:
  removed warning in test
  fixed table tnames (should be tN, where N is number)
sql/item_sum.cc:
  added debug information
  fixed memory leak in group_concat function

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


mysql-test/r/func_gconcat.result:
  test for BUG#757
mysql-test/t/func_gconcat.test:
  test for BUG#757
sql/item_sum.cc:
  reduced using of slow current_thd/current_lex macro
  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)
sql/item_sum.h:
  removed Item_func_group_concat::fix_length_and_dec() because item have its own fix_fields and will not have inherited items

into myvenu.com:/home/venu/work/sql/dev-4.1

into bar.mysql.r18.ru:/usr/home/bar/mysql-4.1

  Item_func::agg_arg_collations()
  Item_func::arr_arg_collations_for_comparison()
 to aggregate argument collations.
It helps to reuse a lot of code.

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

into mysql.r18.ru:/usr/home/ram/work/4.1

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

mysql-test/t/subselect.test:
  fixed test case for no InnoDB

mysql-test/r/handler.result:
  test case for the bug #787: HANDLER without INDEX doesn't work with deleted rows
mysql-test/t/handler.test:
  test case for the bug #787: HANDLER without INDEX doesn't work with deleted rows
sql/sql_handler.cc:
  fix for the bug #787: HANDLER without INDEX doesn't work with deleted rows

into narttu.mysql.fi:/my/mysql-4.1

into bar.mysql.r18.ru:/usr/home/bar/mysql-4.1

into sanja.is.com.ua:/home/bell/mysql/bk/work-4.1

  ROW('a','b','c) = ROW('A' collate latin1_bin,'b','c') returns 0
When a number is compared to a string, character sets and 
collations are not aggregated. e.g. this returned error in 4.1.0:

SELECT 1=_latin2'1';
because character sets was aggregated, and 1 was considered as
a string of latin1 charset during this aggregation.

into narttu.mysql.fi:/my/mysql-4.1

mysql-test/r/func_gconcat.result:
  Update results
mysql-test/t/func_gconcat.test:
  Make tests repeatable.  The problem is that due to floating point handling / qsort implementation the way rows are read may differ between versions

into sanja.is.com.ua:/home/bell/mysql/bk/work-4.1


sql/sql_select.cc:
  Auto merged

client/get_password.c:
  Removed dbug.h inclussion (windows build fix)

into sanja.is.com.ua:/home/bell/mysql/bk/work-err-4.1


mysql-test/r/subselect.result:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged

into mashka.mysql.fi:/home/my/mysql-4.1


mysql-test/r/grant_cache.result:
  Auto merged

mysql-test/r/func_gconcat.result:
  Fixed test case after merge
mysql-test/r/grant_cache.result:
  Updated test case (Wrong push by some developer)
mysys/mf_loadpath.c:
  Fix for my_load_path() and ./directory handling from last changeset

acinclude.m4:
  Auto merged
mysql-test/r/subselect.result:
  Auto merged
scripts/mysql_create_system_tables.sh:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_yacc.yy:
  Auto merged

mysql-test/r/merge.result:
  Test of MERGE table patch
mysql-test/t/merge.test:
  Test of MERGE table patch

into sanja.is.com.ua:/home/bell/mysql/bk/work-err-4.1

into myvenu.com:/home/venu/work/sql/dev-4.1

  Minor fixups for SQLSTATE values to be compatible with ODBC spec


include/sql_state.h:
  Minor fixups for SQLSTATE values to be compatible with ODBC spec

sql/item_subselect.cc:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_lex.h:
  Auto merged
sql/sql_select.cc:
  Auto merged