Added record_rnd_buffer
Added --safe-user-create
Fix for ALTER TABLE RENAME on windows


Docs/manual.texi:
  Changelog and documentation of new features.
  More information about using threaded client libraries
include/mysql_com.h:
  Added prototype for my_thread_init()
include/mysqld_error.h:
  New error for --safe-create-user
innobase/buf/buf0flu.c:
  Portability fix
innobase/include/univ.i:
  Portability fix
mysql-test/t/distinct.test:
  Test for distinct bug
sql/mysql_priv.h:
  Added record_rnd_buffer
sql/mysqld.cc:
  Added record_rnd_buffer
sql/records.cc:
  Added record_rnd_buffer
sql/share/czech/errmsg.txt:
  New error message for --safe-user-create
sql/share/danish/errmsg.txt:
  New error message for --safe-user-create
sql/share/dutch/errmsg.txt:
  New error message for --safe-user-create
sql/share/english/errmsg.txt:
  New error message for --safe-user-create
sql/share/estonian/errmsg.txt:
  New error message for --safe-user-create
sql/share/french/errmsg.txt:
  New error message for --safe-user-create
sql/share/german/errmsg.txt:
  New error message for --safe-user-create
sql/share/greek/errmsg.txt:
  New error message for --safe-user-create
sql/share/hungarian/errmsg.txt:
  New error message for --safe-user-create
sql/share/italian/errmsg.txt:
  New error message for --safe-user-create
sql/share/japanese/errmsg.txt:
  New error message for --safe-user-create
sql/share/korean/errmsg.txt:
  New error message for --safe-user-create
sql/share/norwegian-ny/errmsg.txt:
  New error message for --safe-user-create
sql/share/norwegian/errmsg.txt:
  New error message for --safe-user-create
sql/share/polish/errmsg.txt:
  New error message for --safe-user-create
sql/share/portuguese/errmsg.txt:
  New error message for --safe-user-create
sql/share/romanian/errmsg.txt:
  New error message for --safe-user-create
sql/share/russian/errmsg.txt:
  New error message for --safe-user-create
sql/share/slovak/errmsg.txt:
  New error message for --safe-user-create
sql/share/spanish/errmsg.txt:
  New error message for --safe-user-create
sql/share/swedish/errmsg.txt:
  New error message for --safe-user-create
sql/sql_acl.cc:
  Checking of privileges for --safe-user-create
sql/sql_acl.h:
  --safe-user-create
sql/sql_base.cc:
  --safe-user-create
sql/sql_parse.cc:
  --safe-user-create
sql/sql_show.cc:
  --safe-user-create
sql/sql_table.cc:
  Fix for ALTER TABLE RENAME on windows