Added inequality predicate to range optimization

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

  Added inequality predicate to range optimization

  Added multiple key cache

  Added multiple key cache

Earlier it could have failed in some special cases.

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

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

(resolving fields of reduced subselect)

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

test moved to other bug 

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

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

into teton.kitebird.com:/home/paul/mysql-4.1

into rhols221.adsl.netsonic.fi:/home/my/bk/mysql-4.1

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

  A better comment

and comparison was done binary. Now, a binary string wins a character sting 
taking in account their derivation. That means a character field wins a
binary literal and comparison is done according to the character field
collation, not binary. 

into teton.kitebird.com:/home/paul/mysql-4.1

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

  Change mode to -rw-rw-r--

REPLACE() now processed arguments collations according to standard

fixed BUG #726

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

  My stupid typo fix

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