embedded library
hash_insert renamed to my_hash_insert to avoid name intersection
with another libraries
is there better idea?

embedded library
missed memory freeing added

prepared statements in embedded library.
some fixes after testing

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

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

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

  Fix the problem with errmsg compilation

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

prepared statements in embedded library

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

prepared statements in embedded library

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

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

prepared statements in embedded library

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

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

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

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

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

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.

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.