Fix warning after fix for bug#27321.

  After merge fix.

into  moonbone.local:/mnt/gentoo64/work/27321-bug-5.0-opt-mysql

The Item_outer_ref class based on the Item_direct_ref class was always used
to represent an outer field. But if the outer select is a grouping one and the 
outer field isn't under an aggregate function which is aggregated in that
outer select an Item_ref object should be used to represent such a field.
If the outer select in which the outer field is resolved isn't grouping then
the Item_field class should be used to represent such a field.
This logic also should be used for an outer field resolved through its alias
name.

Now the Item_field::fix_outer_field() uses Item_outer_field objects to
represent aliased and non-aliased outer fields for grouping outer selects
only.
Now the fix_inner_refs() function chooses which class to use to access outer
field - the Item_ref or the Item_direct_ref. An object of the chosen class
substitutes the original field in the Item_outer_ref object.
The direct_ref and the found_in_select_list fields were added to the
Item_outer_ref class.

into  mysql.com:/d2/hf/mrg/mysql-5.0-opt

into  mysql.com:/d2/hf/mrg/mysql-5.0-opt

into  mysql.com:/d2/hf/mrg/mysql-4.1-opt

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-opt

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-opt

- autoincrement column of size medium int not handled in ndb_restore
- added testcase also for other types, tiny, small... etc

into  gshchepa.localdomain:/home/uchum/work/bk-trees/5507-ci

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-opt

Support of views wasn't implemented for the TRUNCATE statement.
Now TRUNCATE on views has the same semantics as DELETE FROM view:
mysql_truncate() checks whether the table is a view and falls back
to delete if so.
In order to initialize properly the LEX::updatable for a view
st_lex::can_use_merged() now allows usage of merged views for the
TRUNCATE statement.

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-opt

into  whalegate.ndb.mysql.com:/home/tomas/mysql-4.1-opt

into  trift2.:/MySQL/M50/push-5.0

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-opt

- parse indexname using "split" instead of sscanf, as not to break at space
- test case with space in key
- enclose names in printout

into  olga.mysql.com:/home/igor/mysql-5.0-opt

into  olga.mysql.com:/home/igor/mysql-5.0-opt

are used as arguments of the IN predicate.
Added a function to check compatibility of row expressions. Made sure that this
function to be called for Item_func_in objects by fix_length_and_dec().

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

- try to catch as many malloc failures as possible and give error messages

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build-work

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build-work

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build-work

into  magare.gmz:/home/kgeorge/mysql/autopush/B19372-5.0-opt

into  perch.ndb.mysql.com:/home/jonas/src/mysql-5.0-ndb

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

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

into  perch.ndb.mysql.com:/home/jonas/src/50-work

  fix commit trigger on multi-update

into  mysql.com:/home/kent/bk/tmp3/mysql-4.1-build

into  mysql.com:/home/kent/bk/tmp3/mysql-5.0-build