single row subquery always can return NULL (no rows found) (BUG#5590)

Do not try use fields examples is expression and fiend used or SET/ENUM field used in types merging procedure (BUG#5618)

into rurik.mysql.com:/home/igor/dev/mysql-4.1-0

with a fixed constant to pass on QNX:
max_data_file_length is calculated depending on max possible value of
record pointer. It's different on QNX, so the difference in results is OK.

into hundin.mysql.fi:/home/marko/j/mysql-4.1

into sanja.is.com.ua:/home/bell/mysql/bk/work-update-4.1

into sanja.is.com.ua:/home/bell/mysql/bk/work-sum-4.1

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

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

of EXPLAIN SELECT, rather than binary strings.

into rurik.mysql.com:/home/igor/dev/mysql-4.1-0

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

set a printout in SocketClient only for debug

  Slightly improved the fix for bug #5406.

  Bug #5561 No BINARY_FLAG in metadata

into mysql.com:/usr/local/home/marty/MySQL/test/mysql-4.1

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

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

(for octane2)

included term.h if there isn't termcap.h in cmd-line-utils/libedit/term.c

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

on intelxeon3 (Solaris x86))

into gw.mysql.r18.ru:/usr/home/ram/work/4.1.b5546

into mysql.com:/usr/home/bar/mysql-4.1

into gw.mysql.r18.ru:/usr/home/ram/work/4.1.b5546

  removed help text for non implemented command

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

  SQL_SELECT_LIMIT=0 protection