- Updates for 5.1

into  pilot.blaudden:/home/msvensson/mysql/bug20166/my51-bug20166

 - Use mysql_system_tables.sql to create MySQL system tables in
   all places where we create them(mysql_install_db, mysql-test-run-pl
   and mysql_fix_privilege_tables.sql)

 - Fixes for 5.1

into  pilot.blaudden:/home/msvensson/mysql/bug20166/my51-bug20166

 - Part 2, add @@hostname system variable

into  pilot.blaudden:/home/msvensson/mysql/bug20166/my51-bug20166

 - Add test of bootstrap mode
 - Make mysqld return error if bootstrap failed  

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.1-new-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.1-new-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.1-new-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.1-new-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint

know it's an escape char.
Replace /dev/null with NUL
Replace "closed stdout" with "not open fd"

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.1-new-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.1-new-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.1-new-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-4.1-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint

mainly occurs on win2003 64bit.
 - Execute "exec" commands directly with cmd.exe and replace "--exec echo ..." with "--exec .\echo.exe ..." 

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-4.1-maint

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1-maint

into  neptunus.(none):/home/msvensson/mysql/mysql-5.0-maint

into  neptunus.(none):/home/msvensson/mysql/mysql-4.1-maint

into  neptunus.(none):/home/msvensson/mysql/bug10777/my51-bug10777

into  neptunus.(none):/home/msvensson/mysql/bug10777/my50-bug10777

uses the same format specifiers

into  pilot.mysql.com:/home/msvensson/mysql/comp_err_checksum/my51-comp_err_checksum