Added multiple key cache

  Added multiple key cache

  Temporarily fix for test failure
  ,.

  Rewritten in nicer way
  ,

   distribution as well

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

into mysql.com:/space/my/mysql-4.1-build

into mysql.com:/space/my/mysql-4.1-build

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

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

   distribution - better use -I../zlib where appropriate (usually we use
   the zlib installed in the system)

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

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

  Removed non-generic info (key used blocks)
preload.result, preload.test, lex.h, sql_yacc.yy:
  Syntax change for preload statement

into bar.mysql.r18.ru:/usr/home/bar/mysql-4.1

into bar.mysql.r18.ru:/usr/home/bar/mysql-4.1

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

BIN
OCT
CONV
HEX
CHAR
FORMAT
REPLACE

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

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

  More edits to INSTALL-WIN-SOURCE.

enforce REAL_EMAIL

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

  Initial cleanup edits.

Added new HOWTO doc 'INSTALL-WIN-SOURCE' on building 'mysql clients and server' on WINDOWS from BitKeeper as well as from distributed source archive

   consistent with the other column names in the table.

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

Compiler can signal error when init_sigpipe_variables expands as empty place.
Had to remove all semicolons after init_sigpipe_variables