WL#604 Privileges in embedded library
bugs fixed

WL#604 Privileges in embedded library
code added to check privileges in embedded library
NO_EMBEDDED_ACCESS_CHECKS macros inserted in code so we can exclude
access-checking parts. Actually we now can exclude these parts from
standalone server as well. Do we need it?
Access checks are disabled in embedded server by default. One should
edit libmysqld/Makefile manually to get this working.
We definitely need the separate configure for embedded server

- offset of substr begining
- offset of substr end
- number of characters (MB compatible)

null_string wasn't known in libmysqld/lib_sql.cc, that caused compiler's error
i put the declaration of the null_string in mysql_priv.h and renamed it
to my_null_string to reduce the probability of name's intersections

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

Now it can work with any character set.

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

   .c files (the IBM Visual Age C compiler aborts with a syntax error
   on these)

   (instead of libedit, which is the default for 4.1)
 - brushed up the usage help text a bit

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

  Typo fix: redundant "in"

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

  comp_err failed to compile error message file when a
  character set was not incompiled.

  Better English message

into mysql.com:/space/my/mysql-4.1-build

   cmd-line-utils/readline from the commercial distribution
 - fixed some copyright headers so mysql-copyright can process them

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

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

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

  Bug fix

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

  There are some problems compiling with pure "configure"
  I need to fix it first.

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

sequence boundaries in functions LIKE and LOCATE in
the case of "binary" collation. Comparison was done
like if the strings were just a binary strings without
character set assumption.

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