Bug#3453: MySQL output formatting in multibyte character sets

  new file

into poseidon.(none):/home/tomas/mysql-4.1-clean

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

into poseidon.(none):/home/tomas/mysql-4.1-clean

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

into mysql.com:/media/sda1/mysql/mysql-4.1-5034

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

into mysql.com:/media/sda1/mysql/mysql-4.1-5034

into eagle.mysql.r18.ru:/home/vva/work/BUG_libedit/mysql-4.1.clear

Bug #4696  	segfault in cmd-line-utils/libedit/history.c:history_save() 
(bundled libedit)

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

into poseidon.(none):/home/tomas/mysql-4.1-clean

into eagle.mysql.r18.ru:/home/vva/work/BUG_libedit/mysql-4.1.clear_v2

execute crashes server": we were deleting lex->result
after each execute, but prepared statements assumed that
it's left intact.
The fix adds cleanup() method to select_result hierarchy,
so that result objects can be reused.
Plus we now need to delete result objects more wisely.

(fixed Bug #4462 libedit compile failure)

into build.mysql.com:/users/rburnett/mysql41

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

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

  Added (my_bool) cast to !(nextflag & SEARCH_PREFIX) code to correct MSVC warning about mismatched integral types

into mysql.com:/home/jonas/src/mysql-4.1

into eagle.mysql.r18.ru:/home/vva/work/BUG_4998/mysql-4.1

into eagle.mysql.r18.ru:/home/vva/work/BUG_4998/mysql-4.1