prepared statements in embedded library.
some fixes after testing


include/mysql.h:
  virtual method added
libmysql/client_settings.h:
  declaration added
libmysql/libmysql.c:
  implementation added
  mysql_fetch changed to work in both libraries
libmysqld/lib_sql.cc:
  implementation added
sql-common/client.c:
  added items in methods table
sql/client_settings.h:
  decided to remove such defines - i placed single #ifdef in client.c

embedded library
some dirty places cleaned:

uint removed from mysql.h as Miguel suggested
empty_string renamed as my_empty_string to get rid of name's intersections
using embedded library


include/mysql.h:
  uint -> unsigned int
include/mysql_com.h:
  this caused warnings when not in expression
libmysqld/lib_sql.cc:
  uint -> unsigned int
sql-common/client.c:
  uint -> unsigned int
sql/item_strfunc.cc:
  empty_string -> my_empty_string
sql/mysql_priv.h:
  empty_string -> my_empty_string
sql/set_var.cc:
  empty_string -> my_empty_string
sql/sql_class.cc:
  empty_string -> my_empty_string
sql/sql_prepare.cc:
  net_flush ifdef-ed

embedded library
I decided to get rid of #define mysql_some_function in mysql.h
It puzzles users and makes problems with dynamic libraries

Finally, there are only two functions left, that are covered with
the #define-s and it won't hurt performance at all


client/mysqltest.c:
  that'll be faster
include/mysql.h:
  #defines changed to functions
libmysql/libmysql.c:
  that'll be faster that calls of wrapper functions
libmysqld/libmysqld.c:
  skip wrapper function
sql-common/client.c:
  skip wrapper function

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

  Fix the problem with errmsg compilation


configure.in:
  Fix the problem with errmsg compilation

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

prepared statements in embedded library


include/mysql_com.h:
  to make net_flush() working in expressions
libmysqld/lib_sql.cc:
  some bugs fixed
libmysqld/libmysqld.c:
  we already have the define in client_settings.h
sql/protocol.cc:
  net_store_data should work that way in Protocol_prep (embedded server)
sql/protocol.h:
  definition for net_store_data
sql/sql_prepare.cc:
  now it works in embedded library

into deer.(none):/home/hf/work/mysql-4.1.stmt

prepared statements in embedded library


include/mysql.h:
  Another 'virtual' method
libmysql/client_settings.h:
  client implementation declared
libmysql/libmysql.c:
  mysql_execute edited to work with embedded implementation
libmysqld/lib_sql.cc:
  one error fixed (we do need parameter's buffer in embedded library)
  embedded recordset transfer methods implementations added
sql-common/client.c:
  method added to the table
sql/client_settings.h:
  no prepared statements in mimiclient
sql/mysql_priv.h:
  these functions became global
sql/protocol.cc:
  the stub added
sql/protocol.h:
  had to change Protocol's interface for embedded library
sql/sql_class.h:
  i changed this only for embedded case, but i think it's better to do the
  same for remote server also
sql/sql_prepare.cc:
  parts of code #ifndef-ed

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


sql/sql_parse.cc:
  Auto merged

into deer.(none):/home/hf/work/mysql-4.1.stmt

prepared statements in embedded library


include/mysql.h:
  stmt_execute 'virtual' method added
include/sql_common.h:
  two functions became global
libmysql/client_settings.h:
  declaration for cli_stmt_execute
libmysql/libmysql.c:
  some functions changed to be usable from embedded library
libmysqld/lib_sql.cc:
  code for embedded stmt_execute added
sql-common/client.c:
  cli_stmt_execute added to the methods table
sql/client_settings.h:
  no need for prepared statements in miniclient

include/config-win.h:
  ISAM table handler is no longer compiled with 4.1

into deer.(none):/home/hf/work/mysql-4.1.stmt

  SET character_set_connection=newcharset;
  SELECT hex('text');

The above sequence failed in some cases.

into deer.(none):/home/hf/work/mysql-4.1.stmt

into deer.(none):/home/hf/work/mysql-4.1.stmt


sql/sql_class.h:
  Auto merged

Prepared statements in embedded server
Several changes in library code with two goals:
to make mysql_prepare_stmt working in embedded server
to get rid of #define mysql_interface_func mysql->methods->interface_func
in user's interface


include/mysql.h:
  modifications of interface
  two goals: to implement prepared statements and to get rid
  of #define mysql_proc (mysql->smth) in interface
include/sql_common.h:
  read_rows function got 'virtual'
libmysql/client_settings.h:
  interface of some functions declared in client.c moved here
libmysql/libmysql.c:
  several functions changed with declared goals
libmysqld/embedded_priv.h:
  libmysqld.c <--> lib_sql.cc interface moved here
libmysqld/lib_sql.cc:
  all embedded 'virtual' functions moved here so they can be static
libmysqld/libmysqld.c:
  embedded 'virtual' function was moved out of here
sql-common/client.c:
  several changes with the declared goal
sql/sql_class.h:
  place to store statement data added to THD
sql/sql_prepare.cc:
  storing of prepare_statement result for embedded server added

http://bugs.mysql.com/bug.php?id=1264

http://bugs.mysql.com/bug.php?id=1264

http://bugs.mysql.com/bug.php?id=1129
From:	Georg Richter
Description: there is a problem with special chars like umlauts in comments 

into mysql.com:/home/dlenev/src/mysql-4.1-clean

mysql-test/r/rpl_until.result:
  Made test indepdendent from mysqld version
mysql-test/t/rpl_until.test:
  Made test indepdendent from mysqld version

sql/sql_parse.cc:
  authentification fix: one constructor and two
  variables optimised

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


sql/sql_yacc.yy:
  Auto merged

into mysql.com:/home/mysql_src/mysql-4.1

sql/log_event.cc:
  undoing a wrong change (the case is handled in Rotate_log_event::exec_event)

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

10 now means "number of characters", not number of bytes.

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

into mysql.com:/home/mysql_src/mysql-4.1

  I forgot to push it in the previous changeset.


mysql-test/r/type_nchar.result:
  I forgot to push it in the previous changeset.

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

CREATE TABLE t1(a NVARCHAR(10))
This is for compatibility with MSSQL, DB2, Informix and some other DBMSs.

Note, standard SQL doesn't have "NVARCHAR" syntax.
There are only these syntaxes in SQL2003:
 NATIONAL VARCHAR
 NCHAR VARCHAR
 NATIONAL CHARACTER VARYING 
 NCHAR VARYING

- Tests were added for all the above syntaxes.


sql/lex.h:
  New syntax:
  
  CREATE TABLE t1(a NVARCHAR(10))
  This is for compatibility with MSSQL, DB2, Informix and some other DBMSs.
  
  Note, standard SQL doesn't have "NVARCHAR" syntax.
  There are only these syntaxes in SQL2003:
   NATIONAL VARCHAR
   NCHAR VARCHAR
   NATIONAL CHARACTER VARYING 
   NCHAR VARYING
sql/sql_yacc.yy:
  New syntax:
  
  CREATE TABLE t1(a NVARCHAR(10))
  This is for compatibility with MSSQL, DB2, Informix and some other DBMSs.
  
  Note, standard SQL doesn't have "NVARCHAR" syntax.
  There are only these syntaxes in SQL2003:
   NATIONAL VARCHAR
   NCHAR VARCHAR
   NATIONAL CHARACTER VARYING 
   NCHAR VARYING

mysql-test/r/subselect.result:
  correct results
mysql-test/r/union.result:
  correct results
mysql-test/t/subselect.test:
  to be sure that results are correct
sql/sql_parse.cc:
  comment + TODO

into mysql.com:/home/dlenev/src/mysql-4.1-868