Preliminary support for options --secure-auth,

--old-passwords
Support for option --old-protocol was removed.
Some test performed.
Tests for SSL and replication are pending.
More strict following to specification for --old-passwords
is in the TODO.


include/mysql_com.h:
  support for 3.20 passwords removed from
  scramble_323
include/mysqld_error.h:
  added error code for --secure-auth mode
libmysql/libmysql.c:
  removed support for 3.20 password and protocol
  version 9
mysql-test/r/connect.result:
  added check for new syntax of 
  set password
mysql-test/r/func_crypt.result:
  tests for two-argument of password() were removed.
  Instead added tests for cooperation of password() and
  old_passwords session/global variable, passwords() and spaces 
  in argument string
mysql-test/t/connect.test:
  added check for new syntax of
  set password
mysql-test/t/func_crypt.test:
  tests for two-argument of password() were removed.
  Instead added tests for cooperation of password() and
  old_passwords session/global variable, passwords() and spaces 
  in argument string
sql-common/client.c:
  removed support for 3.20 servers and 
  protocol version 9
sql/item_strfunc.h:
  fixed comment
sql/mysql_priv.h:
  added declarartion for option opt_secure_auth
sql/mysqld.cc:
  added option opt_secure_auth
  option old-password placed according to
  sort order
sql/password.c:
  removed support for 3.20 clients and 
  old scrambles
sql/set_var.cc:
  added system variable 'secure_auth'
  added system/thread variable 'old_passwords'
sql/set_var.h:
  sys_old_passwords needs to be exported 
  because sys_old_passwords.after_update is used
  in sql_acl.cc
sql/sql_acl.cc:
  support for 3.20 passwords removed
  now acl_init honors options works properly with
  options/variables --secure-auth and --old-passwords
sql/sql_acl.h:
  support for 3.20 clients removed
sql/sql_class.h:
  added system/thread variable old_passwords
sql/sql_parse.cc:
  support for 3.20 clients removed
  now check_user takes into account option
  secure_auth
sql/sql_yacc.yy:
  global variable use_old_passwords 
  replaced with thread-specific variable 
  old_passwords
sql/share/czech/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/danish/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/dutch/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/english/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/estonian/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/french/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/german/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/greek/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/hungarian/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/italian/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/japanese/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/korean/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/norwegian-ny/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/norwegian/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/polish/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/portuguese/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/romanian/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/russian/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/serbian/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/slovak/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/spanish/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/swedish/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)
sql/share/ukrainian/errmsg.txt:
  error message for --secure-auth added
  (as suggested by Paul)

include/mysql_com.h

@@ -319,10 +319,9 @@ void create_random_string(char *to, uint length, struct rand_struct *rand_st);
 
 void hash_password(ulong *to, const char *password);
 void make_scrambled_password_323(char *to, const char *password);
-char *scramble_323(char *to, const char *message, const char *password,
-                   my_bool old_ver);
+char *scramble_323(char *to, const char *message, const char *password);
 my_bool check_scramble_323(const char *, const char *message,
-                           unsigned long *salt, my_bool old_ver);
+                           unsigned long *salt);
 void get_salt_from_password_323(unsigned long *res, const char *password);
 void make_password_from_salt_323(char *to, const unsigned long *salt);